diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index d3464964ef..5e7e20fa96 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -182,7 +182,7 @@ GEM
       unf_ext
     unf_ext (0.0.8)
     unicode-display_width (2.1.0)
-    unparser (0.6.3)
+    unparser (0.6.4)
       diff-lcs (~> 1.3)
       parser (>= 3.1.0)
     uri_template (0.7.0)