diff --git a/Gemfile.lock b/Gemfile.lock
index 1a81952..c0e1bea 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -151,7 +151,7 @@ GEM
       nio4r (~> 2.0)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.11)
+    rack (1.6.12)
     rack-cors (1.0.6)
       rack (>= 1.6.0)
     rack-test (0.6.3)