diff --git a/Gemfile.lock b/Gemfile.lock
index 12dd8a9e2..c81788d81 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -490,16 +490,16 @@ GEM
     rswag-ui (2.3.1)
       actionpack (>= 3.1, < 7.0)
       railties (>= 3.1, < 7.0)
-    rubocop (0.90.0)
+    rubocop (0.91.0)
       parallel (~> 1.10)
       parser (>= 2.7.1.1)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.7)
       rexml
-      rubocop-ast (>= 0.3.0, < 1.0)
+      rubocop-ast (>= 0.4.0, < 1.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (0.3.0)
+    rubocop-ast (0.4.0)
       parser (>= 2.7.1.4)
     rubocop-rails (2.8.0)
       activesupport (>= 4.2.0)