diff --git a/Gemfile.lock b/Gemfile.lock
index 057ff26..426c358 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,7 +28,7 @@ GEM
     json (1.8.3)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
-    mime-types (2.99)
+    mime-types (2.99.1)
     minitest (5.8.4)
     netrc (0.11.0)
     pony (1.11)