diff --git a/.rubocop/todo.rspec.yml b/.rubocop/todo.rspec.yml
index d100a4aab..3ee2f0f92 100644
--- a/.rubocop/todo.rspec.yml
+++ b/.rubocop/todo.rspec.yml
@@ -326,6 +326,8 @@ RSpec/FilePath:
     - 'spec/db/migrate/issue_*_spec.rb'
     - 'spec/jobs/issue_*_spec.rb'
     - 'spec/lib/import/base_factory_spec.rb'
+    - 'spec/models/knowledge_base/answer/translation/search_with_attachment_spec.rb'
+    - 'spec/models/trigger/sms_spec.rb'
 
 RSpec/InstanceVariable:
   Exclude:
diff --git a/Gemfile.lock b/Gemfile.lock
index 7d209bfbf..ec1e1153b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -108,7 +108,7 @@ GEM
     argon2 (2.0.2)
       ffi (~> 1.9)
       ffi-compiler (>= 0.1)
-    ast (2.4.1)
+    ast (2.4.2)
     autoprefixer-rails (9.5.1)
       execjs
     binding_of_caller (0.8.0)
@@ -150,7 +150,7 @@ GEM
       json
     composite_primary_keys (11.2.0)
       activerecord (~> 5.2.1)
-    concurrent-ruby (1.1.7)
+    concurrent-ruby (1.1.8)
     coveralls (0.8.23)
       json (>= 1.8, < 3)
       simplecov (~> 0.16.1)
@@ -248,7 +248,7 @@ GEM
     http-form_data (2.1.1)
     http_parser.rb (0.6.0)
     httpclient (2.8.3)
-    i18n (1.8.5)
+    i18n (1.8.7)
       concurrent-ruby (~> 1.0)
     icalendar (2.5.3)
       ice_cube (~> 0.16)
@@ -291,7 +291,7 @@ GEM
     mini_portile2 (2.5.0)
     mini_racer (0.2.9)
       libv8 (>= 6.9.411)
-    minitest (5.14.2)
+    minitest (5.14.3)
     msgpack (1.2.4)
     multi_json (1.15.0)
     multi_xml (0.6.0)
@@ -359,7 +359,7 @@ GEM
       omniauth-oauth2 (>= 1.4.0)
     openssl (2.1.2)
     parallel (1.20.1)
-    parser (2.7.2.0)
+    parser (3.0.0.0)
       ast (~> 2.4.1)
     pg (0.21.0)
     pluginator (1.5.0)
@@ -454,28 +454,28 @@ GEM
       rspec-support (~> 3.9.0)
     rspec-support (3.9.3)
     rszr (0.5.2)
-    rubocop (1.6.1)
+    rubocop (1.9.1)
       parallel (~> 1.10)
-      parser (>= 2.7.1.5)
+      parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml
       rubocop-ast (>= 1.2.0, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (1.3.0)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.4.1)
       parser (>= 2.7.1.5)
-    rubocop-performance (1.9.1)
+    rubocop-performance (1.9.2)
       rubocop (>= 0.90.0, < 2.0)
       rubocop-ast (>= 0.4.0)
-    rubocop-rails (2.9.0)
+    rubocop-rails (2.9.1)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 0.90.0, < 2.0)
-    rubocop-rspec (2.0.1)
+    rubocop-rspec (2.1.0)
       rubocop (~> 1.0)
       rubocop-ast (>= 1.1.0)
-    ruby-progressbar (1.10.1)
+    ruby-progressbar (1.11.0)
     ruby-saml (1.10.2)
       nokogiri (>= 1.5.10)
     ruby_dep (1.5.0)
@@ -536,14 +536,14 @@ GEM
       faraday (~> 0.9)
       jwt (>= 1.5, <= 2.5)
       nokogiri (>= 1.6, < 2.0)
-    tzinfo (1.2.8)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.5)
-    unicode-display_width (1.7.0)
+    unicode-display_width (2.0.0)
     unicorn (5.5.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
diff --git a/app/models/ticket/search.rb b/app/models/ticket/search.rb
index 64496ba2f..49b55213f 100644
--- a/app/models/ticket/search.rb
+++ b/app/models/ticket/search.rb
@@ -156,11 +156,11 @@ returns
         return [] if query_or.blank?
 
         query_extension = {
-          'bool': {
-            'must': [
+          bool: {
+            must: [
               {
-                'bool': {
-                  'should': query_or,
+                bool: {
+                  should: query_or,
                 },
               },
             ],
diff --git a/db/migrate/20170421000001_pretty_date_options_added.rb b/db/migrate/20170421000001_pretty_date_options_added.rb
index 593c22b92..2959c5179 100644
--- a/db/migrate/20170421000001_pretty_date_options_added.rb
+++ b/db/migrate/20170421000001_pretty_date_options_added.rb
@@ -17,8 +17,8 @@ class PrettyDateOptionsAdded < ActiveRecord::Migration[4.2]
             name:    'pretty_date_format',
             tag:     'select',
             options: {
-              'relative': 'relative - e. g. "2 hours ago" or "2 days and 15 minutes ago"',
-              'absolute': 'absolute - e. g. "Monday 09:30" or "Tuesday 23. Feb 14:20"',
+              relative: 'relative - e. g. "2 hours ago" or "2 days and 15 minutes ago"',
+              absolute: 'absolute - e. g. "Monday 09:30" or "Tuesday 23. Feb 14:20"',
             },
           },
         ],
diff --git a/db/seeds/settings.rb b/db/seeds/settings.rb
index a89e8f63b..929fbb9ad 100644
--- a/db/seeds/settings.rb
+++ b/db/seeds/settings.rb
@@ -209,9 +209,9 @@ Setting.create_or_update(
         name:    'pretty_date_format',
         tag:     'select',
         options: {
-          'relative':  'relative - e. g. "2 hours ago" or "2 days and 15 minutes ago"',
-          'absolute':  'absolute - e. g. "Monday 09:30" or "Tuesday 23. Feb 14:20"',
-          'timestamp': 'timestamp - e. g. "2018-08-30 14:30"',
+          relative:  'relative - e. g. "2 hours ago" or "2 days and 15 minutes ago"',
+          absolute:  'absolute - e. g. "Monday 09:30" or "Tuesday 23. Feb 14:20"',
+          timestamp: 'timestamp - e. g. "2018-08-30 14:30"',
         },
       },
     ],
diff --git a/lib/search_index_backend.rb b/lib/search_index_backend.rb
index 501349ef0..8e69ac972 100644
--- a/lib/search_index_backend.rb
+++ b/lib/search_index_backend.rb
@@ -959,8 +959,8 @@ helper method for making HTTP calls and raising error if response was not succes
 
     # for elasticsearch 6.x and later
     string_type = 'text'
-    string_raw  = { 'type': 'keyword', 'ignore_above': 5012 }
-    boolean_raw = { 'type': 'boolean' }
+    string_raw  = { type: 'keyword', ignore_above: 5012 }
+    boolean_raw = { type: 'boolean' }
 
     object.columns_hash.each do |key, value|
       if value.type == :string && value.limit && value.limit <= 5000 && store_columns.exclude?(key)
diff --git a/spec/lib/core_ext/active_record/calculations/pluck_as_hash_spec.rb b/spec/lib/core_ext/active_record/calculations/pluck_as_hash_spec.rb
index be816560a..d775e68ae 100644
--- a/spec/lib/core_ext/active_record/calculations/pluck_as_hash_spec.rb
+++ b/spec/lib/core_ext/active_record/calculations/pluck_as_hash_spec.rb
@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-RSpec.describe ActiveRecord::Calculations do
+RSpec.describe ActiveRecord::Calculations do # rubocop:disable RSpec/FilePath
   describe '#pluck_as_hash' do
     let(:ticket) { create(:ticket) }
 
diff --git a/spec/lib/external_credential/google_spec.rb b/spec/lib/external_credential/google_spec.rb
index f559de240..aa593f679 100644
--- a/spec/lib/external_credential/google_spec.rb
+++ b/spec/lib/external_credential/google_spec.rb
@@ -170,8 +170,8 @@ RSpec.describe ExternalCredential::Google do
         let(:response_status) { 404 }
         let(:response_payload) do
           {
-            "error":             'invalid_client',
-            "error_description": 'The OAuth client was not found.'
+            error:             'invalid_client',
+            error_description: 'The OAuth client was not found.'
           }
         end
         let(:exception_message) { 'Request failed! ERROR: invalid_client (The OAuth client was not found.)' }
@@ -295,8 +295,8 @@ RSpec.describe ExternalCredential::Google do
         let(:response_status) { 400 }
         let(:response_payload) do
           {
-            "error":             'invalid_client',
-            "error_description": 'The OAuth client was not found.'
+            error:             'invalid_client',
+            error_description: 'The OAuth client was not found.'
           }
         end
         let(:exception_message) { /The OAuth client was not found/ }
@@ -397,16 +397,16 @@ RSpec.describe ExternalCredential::Google do
         let(:response_status) { 401 }
         let(:response_payload) do
           {
-            "error": {
-              "code":    401,
-              "message": 'Invalid Credentials',
-              "errors":  [
+            error: {
+              code:    401,
+              message: 'Invalid Credentials',
+              errors:  [
                 {
-                  "locationType": 'header',
-                  "domain":       'global',
-                  "message":      'Invalid Credentials',
-                  "reason":       'authError',
-                  "location":     'Authorization'
+                  locationType: 'header',
+                  domain:       'global',
+                  message:      'Invalid Credentials',
+                  reason:       'authError',
+                  location:     'Authorization'
                 }
               ]
             }
diff --git a/spec/lib/external_credential/microsoft365_spec.rb b/spec/lib/external_credential/microsoft365_spec.rb
index caae2a1cb..7e429e43f 100644
--- a/spec/lib/external_credential/microsoft365_spec.rb
+++ b/spec/lib/external_credential/microsoft365_spec.rb
@@ -132,8 +132,8 @@ RSpec.describe ExternalCredential::Microsoft365 do
         let(:response_status) { 404 }
         let(:response_payload) do
           {
-            "error":             'invalid_client',
-            "error_description": 'The OAuth client was not found.'
+            error:             'invalid_client',
+            error_description: 'The OAuth client was not found.'
           }
         end
         let(:exception_message) { 'Request failed! ERROR: invalid_client (The OAuth client was not found.)' }
@@ -256,8 +256,8 @@ RSpec.describe ExternalCredential::Microsoft365 do
         let(:response_status) { 400 }
         let(:response_payload) do
           {
-            "error":             'invalid_client',
-            "error_description": 'The OAuth client was not found.'
+            error:             'invalid_client',
+            error_description: 'The OAuth client was not found.'
           }
         end
         let(:exception_message) { /The OAuth client was not found/ }
diff --git a/spec/requests/admin/knowledge_base/public_menu_spec.rb b/spec/requests/admin/knowledge_base/public_menu_spec.rb
index 48ca1a7dd..be1179fe6 100644
--- a/spec/requests/admin/knowledge_base/public_menu_spec.rb
+++ b/spec/requests/admin/knowledge_base/public_menu_spec.rb
@@ -5,9 +5,9 @@ RSpec.describe 'Admin Knowledge Base Public Menu', type: :request, authenticated
   let(:params) do
     {
       menu_items_sets: [{
-        "kb_locale_id": kb_locale.id,
-        "location":     location,
-        "menu_items":   menu_items
+        kb_locale_id: kb_locale.id,
+        location:     location,
+        menu_items:   menu_items
       }]
     }
   end
@@ -59,9 +59,9 @@ RSpec.describe 'Admin Knowledge Base Public Menu', type: :request, authenticated
   def build_params(menu_items)
     {
       menu_items_sets: [{
-        "kb_locale_id": kb_locale.id,
-        "location":     location,
-        "menu_items":   menu_items
+        kb_locale_id: kb_locale.id,
+        location:     location,
+        menu_items:   menu_items
       }]
     }
   end
diff --git a/spec/requests/integration/monitoring_spec.rb b/spec/requests/integration/monitoring_spec.rb
index cd4a9bd84..e8c934506 100644
--- a/spec/requests/integration/monitoring_spec.rb
+++ b/spec/requests/integration/monitoring_spec.rb
@@ -553,37 +553,37 @@ RSpec.describe 'Monitoring', type: :request do
 
       # parameters for updating
       params = {
-        'name':        'test4',
-        'object':      'Ticket',
-        'display':     'Test 4',
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'default':   'test',
-          'type':      'text',
-          'maxlength': 120
+        name:        'test4',
+        object:      'Ticket',
+        display:     'Test 4',
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          default:   'test',
+          type:      'text',
+          maxlength: 120
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           }
         },
-        'id':          'c-196'
+        id:          'c-196'
       }
 
       # update the object
diff --git a/spec/requests/integration/object_manager_attributes_spec.rb b/spec/requests/integration/object_manager_attributes_spec.rb
index d200a9d34..fdca12174 100644
--- a/spec/requests/integration/object_manager_attributes_spec.rb
+++ b/spec/requests/integration/object_manager_attributes_spec.rb
@@ -14,37 +14,37 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
       # token based on headers
       params = {
-        'name':        'test1',
-        'object':      'Ticket',
-        'display':     'Test 1',
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'default':   'test',
-          'type':      'text',
-          'maxlength': 120
+        name:        'test1',
+        object:      'Ticket',
+        display:     'Test 1',
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          default:   'test',
+          type:      'text',
+          maxlength: 120
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           }
         },
-        'id':          'c-196'
+        id:          'c-196'
       }
 
       post '/api/v1/object_manager_attributes', params: params, as: :json
@@ -61,36 +61,36 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
       # token based on headers
       params = {
-        'name':        'test2',
-        'object':      'Ticket',
-        'display':     'Test 2',
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'type':      'text',
-          'maxlength': 120
+        name:        'test2',
+        object:      'Ticket',
+        display:     'Test 2',
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          type:      'text',
+          maxlength: 120
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           }
         },
-        'id':          'c-196'
+        id:          'c-196'
       }
 
       post '/api/v1/object_manager_attributes', params: params, as: :json
@@ -114,37 +114,37 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
       # parameters for updating
       params = {
-        'name':        object.name,
-        'object':      'Ticket',
-        'display':     'Test 4',
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'default':   'test',
-          'type':      'text',
-          'maxlength': 120
+        name:        object.name,
+        object:      'Ticket',
+        display:     'Test 4',
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          default:   'test',
+          type:      'text',
+          maxlength: 120
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           }
         },
-        'id':          'c-196'
+        id:          'c-196'
       }
 
       # update the object
@@ -162,35 +162,35 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
       # token based on headers
       params = {
-        'active':      true,
-        'data_option': {
-          'options': {
-            'false': 'no',
-            'true':  'yes'
+        active:      true,
+        data_option: {
+          options: {
+            false: 'no',
+            true:  'yes'
           }
         },
-        'data_type':   'boolean',
-        'display':     'Boolean 2',
-        'id':          'c-200',
-        'name':        'bool2',
-        'object':      'Ticket',
-        'screens':     {
-          'create_middle': {
+        data_type:   'boolean',
+        display:     'Boolean 2',
+        id:          'c-200',
+        name:        'bool2',
+        object:      'Ticket',
+        screens:     {
+          create_middle: {
             'ticket.agent'    => {
-              'item_class': 'column',
-              'shown':      true
+              item_class: 'column',
+              shown:      true
             },
             'ticket.customer' => {
-              'item_class': 'column',
-              'shown':      true
+              item_class: 'column',
+              shown:      true
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.agent'    => {
-              'shown': true
+              shown: true
             },
             'ticket.customer' => {
-              'shown': true
+              shown: true
             }
           }
         }
@@ -210,46 +210,46 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
       # token based on headers
       params = {
-        'active':      true,
-        'data_option': {
-          'options': {
-            'key1': 'foo'
+        active:      true,
+        data_option: {
+          options: {
+            key1: 'foo'
           }
         },
-        'data_type':   'select',
-        'display':     'Test 5',
-        'id':          'c-204',
-        'name':        'test5',
-        'object':      'User',
-        'screens':     {
-          'create': {
+        data_type:   'select',
+        display:     'Test 5',
+        id:          'c-204',
+        name:        'test5',
+        object:      'User',
+        screens:     {
+          create: {
             'admin.user'      => {
-              'shown': true
+              shown: true
             },
             'ticket.agent'    => {
-              'shown': true
+              shown: true
             },
             'ticket.customer' => {
-              'shown': true
+              shown: true
             }
           },
-          'edit':   {
+          edit:   {
             'admin.user'   => {
-              'shown': true
+              shown: true
             },
             'ticket.agent' => {
-              'shown': true
+              shown: true
             }
           },
-          'view':   {
+          view:   {
             'admin.user'      => {
-              'shown': true
+              shown: true
             },
             'ticket.agent'    => {
-              'shown': true
+              shown: true
             },
             'ticket.customer' => {
-              'shown': true
+              shown: true
             }
           }
         }
@@ -331,39 +331,39 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
     it 'does converts string to boolean for default value for boolean data type with true (01)', db_strategy: :reset do
       params = {
-        'name':        "customerdescription#{rand(999_999_999)}",
-        'object':      'Ticket',
-        'display':     "custom description#{rand(999_999_999)}",
-        'active':      true,
-        'data_type':   'boolean',
-        'data_option': {
-          'options': {
-            'true':  '',
-            'false': '',
+        name:        "customerdescription#{rand(999_999_999)}",
+        object:      'Ticket',
+        display:     "custom description#{rand(999_999_999)}",
+        active:      true,
+        data_type:   'boolean',
+        data_option: {
+          options: {
+            true:  '',
+            false: '',
           },
-          'default': 'true',
-          'screens': {
-            'create_middle': {
+          default: 'true',
+          screens: {
+            create_middle: {
               'ticket.customer': {
-                'shown':      true,
-                'item_class': 'column'
+                shown:      true,
+                item_class: 'column'
               },
               'ticket.agent':    {
-                'shown':      true,
-                'item_class': 'column'
+                shown:      true,
+                item_class: 'column'
               }
             },
-            'edit':          {
+            edit:          {
               'ticket.customer': {
-                'shown': true
+                shown: true
               },
               'ticket.agent':    {
-                'shown': true
+                shown: true
               }
             }
           }
         },
-        'id':          'c-201'
+        id:          'c-201'
       }
 
       authenticated_as(admin)
@@ -382,34 +382,34 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
     it 'does converts string to boolean for default value for boolean data type with false (02)', db_strategy: :reset do
       params = {
-        'name':        "customerdescription_#{rand(999_999_999)}",
-        'object':      'Ticket',
-        'display':     "custom description #{rand(999_999_999)}",
-        'active':      true,
-        'data_type':   'boolean',
-        'data_option': {
-          'options': {
-            'true':  '',
-            'false': '',
+        name:        "customerdescription_#{rand(999_999_999)}",
+        object:      'Ticket',
+        display:     "custom description #{rand(999_999_999)}",
+        active:      true,
+        data_type:   'boolean',
+        data_option: {
+          options: {
+            true:  '',
+            false: '',
           },
-          'default': 'false',
-          'screens': {
-            'create_middle': {
+          default: 'false',
+          screens: {
+            create_middle: {
               'ticket.customer': {
-                'shown':      true,
-                'item_class': 'column'
+                shown:      true,
+                item_class: 'column'
               },
               'ticket.agent':    {
-                'shown':      true,
-                'item_class': 'column'
+                shown:      true,
+                item_class: 'column'
               }
             },
-            'edit':          {
+            edit:          {
               'ticket.customer': {
-                'shown': true
+                shown: true
               },
               'ticket.agent':    {
-                'shown': true
+                shown: true
               }
             }
           }
@@ -436,36 +436,36 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
       ObjectManager::Attribute.migration_execute
 
       params = {
-        'name':        'test_attribute_referenced_by_an_overview',
-        'object':      'Ticket',
-        'display':     'Test Attribute',
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'default':   '',
-          'type':      'text',
-          'maxlength': 120,
-          'null':      true,
-          'options':   {},
-          'relation':  ''
+        name:        'test_attribute_referenced_by_an_overview',
+        object:      'Ticket',
+        display:     'Test Attribute',
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          default:   '',
+          type:      'text',
+          maxlength: 120,
+          null:      true,
+          options:   {},
+          relation:  ''
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           }
         },
@@ -483,12 +483,12 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
         roles:     Role.where(name: 'Agent').pluck(:name),
         condition: {
           'ticket.state_id':                                 {
-            'operator': 'is',
-            'value':    Ticket::State.all.pluck(:id),
+            operator: 'is',
+            value:    Ticket::State.all.pluck(:id),
           },
           'ticket.test_attribute_referenced_by_an_overview': {
-            'operator': 'contains',
-            'value':    'DUMMY'
+            operator: 'contains',
+            value:    'DUMMY'
           },
         },
         order:     {
@@ -531,36 +531,36 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
       ObjectManager::Attribute.migration_execute
 
       params = {
-        'name':        'test_attribute_referenced_by_a_trigger',
-        'object':      'Ticket',
-        'display':     'Test Attribute',
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'default':   '',
-          'type':      'text',
-          'maxlength': 120,
-          'null':      true,
-          'options':   {},
-          'relation':  ''
+        name:        'test_attribute_referenced_by_a_trigger',
+        object:      'Ticket',
+        display:     'Test Attribute',
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          default:   '',
+          type:      'text',
+          maxlength: 120,
+          null:      true,
+          options:   {},
+          relation:  ''
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           }
         },
@@ -577,17 +577,17 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
         name:      'test_trigger',
         condition: {
           'ticket.test_attribute_referenced_by_a_trigger': {
-            'operator': 'contains',
-            'value':    'DUMMY'
+            operator: 'contains',
+            value:    'DUMMY'
           }
         },
-        'perform': {
+        perform:   {
           'ticket.state_id': {
-            'value': '2'
+            value: '2'
           }
         },
-        'active':  true,
-        'id':      'c-3'
+        active:    true,
+        id:        'c-3'
       }
 
       if Trigger.where('name like ?', '%test%').empty?
@@ -617,36 +617,36 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
       ObjectManager::Attribute.migration_execute
 
       params = {
-        'name':        'test_attribute_referenced_by_a_scheduler',
-        'object':      'Ticket',
-        'display':     'Test Attribute',
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'default':   '',
-          'type':      'text',
-          'maxlength': 120,
-          'null':      true,
-          'options':   {},
-          'relation':  ''
+        name:        'test_attribute_referenced_by_a_scheduler',
+        object:      'Ticket',
+        display:     'Test Attribute',
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          default:   '',
+          type:      'text',
+          maxlength: 120,
+          null:      true,
+          options:   {},
+          relation:  ''
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           }
         },
@@ -660,18 +660,18 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
       # 2. create a scheduler that uses the attribute
       params = {
-        name:                   'test_scheduler',
-        'timeplan':             {
-          'days':    {
-            'Mon': true,
-            'Tue': false,
-            'Wed': false,
-            'Thu': false,
-            'Fri': false,
-            'Sat': false,
-            'Sun': false
+        name:                 'test_scheduler',
+        timeplan:             {
+          days:    {
+            Mon: true,
+            Tue: false,
+            Wed: false,
+            Thu: false,
+            Fri: false,
+            Sat: false,
+            Sun: false
           },
-          'hours':   {
+          hours:   {
             '0':  true,
             '1':  false,
             '2':  false,
@@ -697,7 +697,7 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
             '22': false,
             '23': false
           },
-          'minutes': {
+          minutes: {
             '0':  true,
             '10': false,
             '20': false,
@@ -706,21 +706,21 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
             '50': false
           }
         },
-        'condition':            {
+        condition:            {
           'ticket.test_attribute_referenced_by_a_scheduler': {
-            'operator': 'contains',
-            'value':    'DUMMY'
+            operator: 'contains',
+            value:    'DUMMY'
           }
         },
-        'perform':              {
+        perform:              {
           'ticket.state_id': {
-            'value': '2'
+            value: '2'
           }
         },
-        'disable_notification': true,
-        'note':                 '',
-        'active':               true,
-        'id':                   'c-0'
+        disable_notification: true,
+        note:                 '',
+        active:               true,
+        id:                   'c-0'
       }
 
       if Job.where('name like ?', '%test%').empty?
@@ -750,36 +750,36 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
       ObjectManager::Attribute.migration_execute
 
       params = {
-        'name':        'test_attribute_referenced_by_an_overview',
-        'object':      'Ticket',
-        'display':     'Test Attribute',
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'default':   '',
-          'type':      'text',
-          'maxlength': 120,
-          'null':      true,
-          'options':   {},
-          'relation':  ''
+        name:        'test_attribute_referenced_by_an_overview',
+        object:      'Ticket',
+        display:     'Test Attribute',
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          default:   '',
+          type:      'text',
+          maxlength: 120,
+          null:      true,
+          options:   {},
+          relation:  ''
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           }
         },
@@ -789,36 +789,36 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
       post '/api/v1/object_manager_attributes', params: params, as: :json
 
       params = {
-        'name':        'test_attribute_referenced_by_an_overview',
-        'object':      'User',
-        'display':     'Test Attribute',
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'default':   '',
-          'type':      'text',
-          'maxlength': 120,
-          'null':      true,
-          'options':   {},
-          'relation':  ''
+        name:        'test_attribute_referenced_by_an_overview',
+        object:      'User',
+        display:     'Test Attribute',
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          default:   '',
+          type:      'text',
+          maxlength: 120,
+          null:      true,
+          options:   {},
+          relation:  ''
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           }
         },
@@ -835,12 +835,12 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
         roles:     Role.where(name: 'Agent').pluck(:name),
         condition: {
           'ticket.state_id':                                 {
-            'operator': 'is',
-            'value':    Ticket::State.all.pluck(:id),
+            operator: 'is',
+            value:    Ticket::State.all.pluck(:id),
           },
           'ticket.test_attribute_referenced_by_an_overview': {
-            'operator': 'contains',
-            'value':    'DUMMY'
+            operator: 'contains',
+            value:    'DUMMY'
           },
         },
         order:     {
@@ -892,34 +892,34 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
     it 'does verify if attribute type can not be changed (07)', db_strategy: :reset do
 
       params = {
-        'name':        "customerdescription_#{rand(999_999_999)}",
-        'object':      'Ticket',
-        'display':     "custom description #{rand(999_999_999)}",
-        'active':      true,
-        'data_type':   'boolean',
-        'data_option': {
-          'options': {
-            'true':  '',
-            'false': '',
+        name:        "customerdescription_#{rand(999_999_999)}",
+        object:      'Ticket',
+        display:     "custom description #{rand(999_999_999)}",
+        active:      true,
+        data_type:   'boolean',
+        data_option: {
+          options: {
+            true:  '',
+            false: '',
           },
-          'default': 'false',
-          'screens': {
-            'create_middle': {
+          default: 'false',
+          screens: {
+            create_middle: {
               'ticket.customer': {
-                'shown':      true,
-                'item_class': 'column'
+                shown:      true,
+                item_class: 'column'
               },
               'ticket.agent':    {
-                'shown':      true,
-                'item_class': 'column'
+                shown:      true,
+                item_class: 'column'
               }
             },
-            'edit':          {
+            edit:          {
               'ticket.customer': {
-                'shown': true
+                shown: true
               },
               'ticket.agent':    {
-                'shown': true
+                shown: true
               }
             }
           }
@@ -941,9 +941,9 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
       params['data_type'] = 'input'
       params['data_option'] = {
-        'default':   'test',
-        'type':      'text',
-        'maxlength': 120
+        default:   'test',
+        type:      'text',
+        maxlength: 120
       }
 
       put "/api/v1/object_manager_attributes/#{json_response['id']}", params: params, as: :json
@@ -956,33 +956,33 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
     it 'does verify if attribute type can be changed (08)', db_strategy: :reset do
 
       params = {
-        'name':        "customerdescription_#{rand(999_999_999)}",
-        'object':      'Ticket',
-        'display':     "custom description #{rand(999_999_999)}",
-        'active':      true,
-        'data_type':   'input',
-        'data_option': {
-          'default':   'test',
-          'type':      'text',
-          'maxlength': 120,
+        name:        "customerdescription_#{rand(999_999_999)}",
+        object:      'Ticket',
+        display:     "custom description #{rand(999_999_999)}",
+        active:      true,
+        data_type:   'input',
+        data_option: {
+          default:   'test',
+          type:      'text',
+          maxlength: 120,
         },
-        'screens':     {
-          'create_middle': {
+        screens:     {
+          create_middle: {
             'ticket.customer': {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             },
             'ticket.agent':    {
-              'shown':      true,
-              'item_class': 'column'
+              shown:      true,
+              item_class: 'column'
             }
           },
-          'edit':          {
+          edit:          {
             'ticket.customer': {
-              'shown': true
+              shown: true
             },
             'ticket.agent':    {
-              'shown': true
+              shown: true
             }
           },
         },
@@ -1002,10 +1002,10 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
 
       params['data_type'] = 'select'
       params['data_option'] = {
-        'default': 'fuu',
-        'options': {
-          'key1': 'foo',
-          'key2': 'fuu',
+        default: 'fuu',
+        options: {
+          key1: 'foo',
+          key2: 'fuu',
         }
       }
 
@@ -1039,15 +1039,15 @@ RSpec.describe 'ObjectManager Attributes', type: :request do
     context 'position handling', authenticated_as: -> { admin } do
       let(:params) do
         {
-          'name':        "customerdescription_#{rand(999_999_999)}",
-          'object':      'Ticket',
-          'display':     "custom description #{rand(999_999_999)}",
-          'active':      true,
-          'data_type':   'input',
-          'data_option': {
-            'default':   'test',
-            'type':      'text',
-            'maxlength': 120,
+          name:        "customerdescription_#{rand(999_999_999)}",
+          object:      'Ticket',
+          display:     "custom description #{rand(999_999_999)}",
+          active:      true,
+          data_type:   'input',
+          data_option: {
+            default:   'test',
+            type:      'text',
+            maxlength: 120,
           },
         }
       end
diff --git a/spec/requests/knowledge_base/translation_update_spec.rb b/spec/requests/knowledge_base/translation_update_spec.rb
index 6ddb047fa..ef8462c96 100644
--- a/spec/requests/knowledge_base/translation_update_spec.rb
+++ b/spec/requests/knowledge_base/translation_update_spec.rb
@@ -8,11 +8,11 @@ RSpec.describe 'KnowledgeBase translation update', type: :request, authenticated
 
   let(:params_for_updating) do
     {
-      "translations_attributes": [
+      translations_attributes: [
         {
-          "title":       new_title,
-          "footer_note": 'new footer',
-          "id":          knowledge_base.kb_locales.first.id
+          title:       new_title,
+          footer_note: 'new footer',
+          id:          knowledge_base.kb_locales.first.id
         }
       ]
     }
diff --git a/test/unit/model_test.rb b/test/unit/model_test.rb
index b5489e940..5cce00522 100644
--- a/test/unit/model_test.rb
+++ b/test/unit/model_test.rb
@@ -355,7 +355,7 @@ class ModelTest < ActiveSupport::TestCase
 
     params = {
       firstname:   '123 ABC',
-      preferences: { 'B' => 3, 'C': 4 },
+      preferences: { 'B' => 3, C: 4 },
     }
     clean_params = User.param_cleanup(params)
     clean_user_params = user.param_preferences_merge(clean_params)