diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index 934cb5df08..81f49b7942 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -90,7 +90,7 @@ GEM
     pry (0.14.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    public_suffix (5.0.0)
+    public_suffix (5.0.1)
     racc (1.6.1)
     rack (3.0.2)
     rainbow (3.1.1)