diff --git a/Gemfile.lock b/Gemfile.lock
index 51f6cdc..6c7034c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -166,7 +166,7 @@ GEM
     rack (1.4.7)
     rack-cache (1.7.1)
       rack (>= 0.4)
-    rack-protection (1.5.3)
+    rack-protection (1.5.5)
       rack
     rack-ssl (1.3.4)
       rack