diff --git a/Gemfile.lock b/Gemfile.lock
index 13ea879..ab2978b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,9 +131,9 @@ GEM
     marcel (1.0.2)
     method_source (1.0.0)
     mini_mime (1.1.5)
-    minitest (5.25.1)
+    minitest (5.25.4)
     msgpack (1.7.2)
-    mutex_m (0.2.0)
+    mutex_m (0.3.0)
     net-imap (0.4.10)
       date
       net-protocol
@@ -241,7 +241,7 @@ GEM
       rubocop-ast (>= 1.36.2, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 4.0)
-    rubocop-ast (1.36.2)
+    rubocop-ast (1.37.0)
       parser (>= 3.3.1.0)
     rubocop-capybara (2.18.0)
       rubocop (~> 1.41)
@@ -250,10 +250,10 @@ GEM
     rubocop-performance (1.23.0)
       rubocop (>= 1.48.1, < 2.0)
       rubocop-ast (>= 1.31.1, < 2.0)
-    rubocop-rails (2.24.1)
+    rubocop-rails (2.27.0)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
-      rubocop (>= 1.33.0, < 2.0)
+      rubocop (>= 1.52.0, < 2.0)
       rubocop-ast (>= 1.31.1, < 2.0)
     rubocop-rake (0.6.0)
       rubocop (~> 1.0)