diff --git a/Gemfile.lock b/Gemfile.lock
index 4c83198..27768a8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,7 @@ GEM
       multi_json (~> 1.0)
       signature (~> 0.1.8)
     rack (1.6.13)
-    rack-protection (1.5.3)
+    rack-protection (1.5.5)
       rack
     redis (3.2.1)
     redis-objects (1.2.0)