diff --git a/Gemfile.lock b/Gemfile.lock
index 3a45895..4b686ea 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -219,7 +219,7 @@ GEM
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)
-    rack-protection (1.5.0)
+    rack-protection (1.5.5)
       rack
     rack-ssl (1.3.3)
       rack