diff --git a/Gemfile b/Gemfile
index 2f059b6..87c243e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
 source "http://rubygems.org"
 
 gem "sinatra", "1.3.1"
-gem "oauth",   "0.4.5"
+gem "oauth",   "0.5.5"
diff --git a/Gemfile.lock b/Gemfile.lock
index 140aae3..53e2c25 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    oauth (0.4.5)
+    oauth (0.5.5)
     rack (1.6.11)
     rack-protection (1.5.5)
       rack
@@ -15,7 +15,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  oauth (= 0.4.5)
+  oauth (= 0.5.5)
   sinatra (= 1.3.1)
 
 BUNDLED WITH