diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index f193d09f7e..45eb1806a3 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -51,7 +51,7 @@ GEM
     parallel (1.17.0)
     parallel_tests (2.29.2)
       parallel
-    parser (2.6.3.0)
+    parser (2.6.4.0)
       ast (~> 2.4.0)
     plist (3.5.0)
     rainbow (3.0.0)