diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index 19495f0df3..b5b4d09fae 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -58,7 +58,7 @@ GEM
       racc (~> 1.4)
     ntlm-http (0.1.1)
     parallel (1.20.1)
-    parallel_tests (3.4.0)
+    parallel_tests (3.5.0)
       parallel
     parlour (5.0.0)
       commander (~> 4.5)