diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index 85d5b62c10..a3c297faf6 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
       sorbet-runtime (>= 0.5.9204)
       unparser
     rdiscount (2.2.0.2)
-    regexp_parser (2.3.1)
+    regexp_parser (2.4.0)
     rexml (3.2.5)
     ronn (0.7.3)
       hpricot (>= 0.8.2)