diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index 45eb1806a3..e48e106646 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -38,7 +38,7 @@ GEM
       webrobots (>= 0.0.9, < 0.2)
     mime-types (3.2.2)
       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)