diff --git a/Gemfile.lock b/Gemfile.lock
index d5c38ea9..433a76bf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -348,13 +348,13 @@ GEM
       rspec-mocks (~> 3.9)
       rspec-support (~> 3.9)
     rspec-support (3.10.0)
-    rubocop (1.4.2)
+    rubocop (1.5.2)
       parallel (~> 1.10)
       parser (>= 2.7.1.5)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8)
+      regexp_parser (>= 1.8, < 3.0)
       rexml
-      rubocop-ast (>= 1.1.1)
+      rubocop-ast (>= 1.2.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
     rubocop-ast (1.3.0)