diff --git a/Gemfile.lock b/Gemfile.lock
index e30f732f05..ca95bc04a7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -134,7 +134,7 @@ GEM
       omniauth (~> 1.0)
       rack-openid (~> 1.3.1)
     orm_adapter (0.5.0)
-    rack (2.2.2)
+    rack (2.2.3)
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)