diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index 45eb1806a3c61..7418051d7f5ec 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -36,9 +36,9 @@ GEM
       nokogiri (~> 1.6)
       ntlm-http (~> 0.1, >= 0.1.1)
       webrobots (>= 0.0.9, < 0.2)
-    mime-types (3.2.2)
+    mime-types (3.3)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2019.0331)
+    mime-types-data (3.2019.0904)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     mustache (1.1.0)