diff --git a/Gemfile.lock b/Gemfile.lock
index 18a0fed..4f3e134 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -252,7 +252,7 @@ GEM
       nio4r (~> 2.0)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.11)
+    rack (1.6.12)
     rack-canonical-host (0.2.3)
       addressable (> 0, < 3)
       rack (>= 1.0.0, < 3)