diff --git a/Gemfile.lock b/Gemfile.lock
index 6197680..d56ab87 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -296,9 +296,9 @@ GEM
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.31.3)
       parser (>= 3.3.1.0)
-    rubocop-performance (1.19.1)
-      rubocop (>= 1.7.0, < 2.0)
-      rubocop-ast (>= 0.4.0)
+    rubocop-performance (1.21.0)
+      rubocop (>= 1.48.1, < 2.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
     rubocop-rails (2.15.2)
       activesupport (>= 4.2.0)
       rack (>= 1.1)