diff --git a/Gemfile.lock b/Gemfile.lock
index 8c1d2ec..39df3f4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,7 +47,7 @@ GEM
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
-    parallel (1.20.1)
+    parallel (1.21.0)
     parser (3.0.2.0)
       ast (~> 2.4.1)
     pry (0.14.1)
@@ -74,7 +74,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.2)
-    rubocop (1.20.0)
+    rubocop (1.21.0)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)