diff --git a/Library/Homebrew/test/Gemfile.lock b/Library/Homebrew/test/Gemfile.lock
index cf5da0518..306977ecd 100644
--- a/Library/Homebrew/test/Gemfile.lock
+++ b/Library/Homebrew/test/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
     jaro_winkler (1.5.1)
     json (2.1.0)
     parallel (1.12.1)
-    parallel_tests (2.21.3)
+    parallel_tests (2.22.0)
       parallel
     parser (2.5.1.0)
       ast (~> 2.4.0)