diff --git a/Gemfile.lock b/Gemfile.lock
index 094445ca3..d1e15e52f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -138,7 +138,7 @@ GEM
       json
     composite_primary_keys (10.0.5)
       activerecord (~> 5.1.0, >= 5.1.6)
-    concurrent-ruby (1.1.3)
+    concurrent-ruby (1.1.4)
     coveralls (0.7.1)
       multi_json (~> 1.3)
       rest-client
@@ -151,10 +151,10 @@ GEM
     daemons (1.2.5)
     dalli (2.7.6)
     debug_inspector (0.0.3)
-    delayed_job (4.1.3)
-      activesupport (>= 3.0, < 5.2)
-    delayed_job_active_record (4.1.2)
-      activerecord (>= 3.0, < 5.2)
+    delayed_job (4.1.5)
+      activesupport (>= 3.0, < 5.3)
+    delayed_job_active_record (4.1.3)
+      activerecord (>= 3.0, < 5.3)
       delayed_job (>= 3.0, < 5)
     diff-lcs (1.3)
     diffy (3.2.0)
@@ -232,7 +232,7 @@ GEM
     http-form_data (2.1.1)
     http_parser.rb (0.6.0)
     httpclient (2.8.3)
-    i18n (1.1.1)
+    i18n (1.5.3)
       concurrent-ruby (~> 1.0)
     icalendar (2.4.1)
     icalendar-recurrence (1.1.2)