diff --git a/Library/Homebrew/test/Gemfile.lock b/Library/Homebrew/test/Gemfile.lock
index f3fee683da..c998bcc402 100644
--- a/Library/Homebrew/test/Gemfile.lock
+++ b/Library/Homebrew/test/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
     json (2.1.0)
     mustache (1.1.0)
     parallel (1.12.1)
-    parallel_tests (2.27.0)
+    parallel_tests (2.27.1)
       parallel
     parser (2.5.3.0)
       ast (~> 2.4.0)