diff --git a/Gemfile.lock b/Gemfile.lock
index 6514c30..06ac7e9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -65,7 +65,7 @@ GEM
     parser (3.0.2.0)
       ast (~> 2.4.1)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails-dom-testing (2.0.3)