diff --git a/src/Gemfile.lock b/src/Gemfile.lock
index 6864234..baa5014 100644
--- a/src/Gemfile.lock
+++ b/src/Gemfile.lock
@@ -8,7 +8,7 @@ GEM
     json (2.0.2)
     multi_json (1.12.1)
     rack (1.6.5)
-    rack-protection (1.5.3)
+    rack-protection (1.5.5)
       rack
     rack-test (0.6.3)
       rack (>= 1.0)