diff --git a/.coffeelint/rules/prevent_underscore_backport.coffee b/.coffeelint/rules/prevent_underscore_backport.coffee
new file mode 100644
index 000000000..d87fc2b79
--- /dev/null
+++ b/.coffeelint/rules/prevent_underscore_backport.coffee
@@ -0,0 +1,20 @@
+module.exports = class PreventUnderscoreBackport
+
+  rule:
+    name: 'prevent_underscore_backport'
+    level: 'error'
+    message: 'The method __(...) is not available in current stable'
+    description: '''
+      '''
+
+  constructor: ->
+    @callTokens = []
+
+  tokens: ['CALL_START']
+
+  lintToken: (token, tokenApi) ->
+    [type, tokenValue] = token
+
+    p = tokenApi.peek(-1)
+    if p[1] == '__'
+      return { }
diff --git a/.gitlab/ci/pre.yml b/.gitlab/ci/pre.yml
index 5a6d2a651..fab758dce 100644
--- a/.gitlab/ci/pre.yml
+++ b/.gitlab/ci/pre.yml
@@ -48,7 +48,7 @@ brakeman:
 coffeelint:
   <<: *template_pre
   script:
-    - coffeelint app/
+    - coffeelint --rules ./.coffeelint/rules/* app/
 
 bundle-audit:
   <<: *template_pre
diff --git a/.rubocop/cop/zammad/prevent_underscore_backport.rb b/.rubocop/cop/zammad/prevent_underscore_backport.rb
new file mode 100644
index 000000000..7bb6791a3
--- /dev/null
+++ b/.rubocop/cop/zammad/prevent_underscore_backport.rb
@@ -0,0 +1,17 @@
+# Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
+
+module RuboCop
+  module Cop
+    module Zammad
+      class PreventUnderscroreBackport < Base
+        MSG = <<~ERROR_MESSAGE.freeze
+          The method __(...) is not available in current stable.
+        ERROR_MESSAGE
+
+        def on_send(node)
+          add_offense(node) if node.method_name.eql? :__
+        end
+      end
+    end
+  end
+end
diff --git a/.rubocop/rubocop_zammad.rb b/.rubocop/rubocop_zammad.rb
index f3e8764cd..04ff86a9c 100644
--- a/.rubocop/rubocop_zammad.rb
+++ b/.rubocop/rubocop_zammad.rb
@@ -10,3 +10,4 @@ require_relative 'cop/zammad/no_to_sym_on_string'
 require_relative 'cop/zammad/prefer_negated_if_over_unless'
 require_relative 'cop/zammad/update_copyright'
 require_relative 'cop/zammad/forbid_rand'
+require_relative 'cop/zammad/prevent_underscore_backport'
diff --git a/coffeelint.json b/coffeelint.json
index 548e8e3e5..ca49e3c31 100644
--- a/coffeelint.json
+++ b/coffeelint.json
@@ -131,5 +131,8 @@
   },
   "transform_messes_up_line_numbers": {
     "level": "error"
+  },
+  "prevent_underscore_backport": {
+    "level": "error"
   }
 }