diff --git a/Gemfile b/Gemfile
index 0af3942..978de6e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -26,7 +26,7 @@ gem 'json_pure', '=1.8.0'
 gem 'multi_json', '=1.7.7'
 gem 'pg', '>=0.15.1'
 gem 'rack', '>=1.5.2'
-gem 'rack-protection', '=1.5.0'
+gem 'rack-protection', '1.5.5'
 gem 'sinatra', '=1.4.3'
 gem 'stringex', '=1.5.1'
 gem 'thin', '=1.5.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index 8260706..f7dd333 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
     multi_json (1.7.7)
     pg (0.21.0)
     rack (1.6.12)
-    rack-protection (1.5.0)
+    rack-protection (1.5.5)
       rack
     sinatra (1.4.3)
       rack (~> 1.4)
@@ -104,7 +104,7 @@ DEPENDENCIES
   multi_json (= 1.7.7)
   pg (>= 0.15.1)
   rack (>= 1.5.2)
-  rack-protection (= 1.5.0)
+  rack-protection (= 1.5.5)
   sinatra (= 1.4.3)
   stringex (= 1.5.1)
   thin (= 1.5.1)