diff --git a/Gemfile.lock b/Gemfile.lock
index 0547135..45bca35 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -215,7 +215,7 @@ GEM
       slop (~> 3.4)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.5.2)
+    rack (1.5.5)
     rack-mini-profiler (0.9.2)
       rack (>= 1.1.3)
     rack-test (0.6.2)