diff --git a/Gemfile.lock b/Gemfile.lock
index 9902ba8..ee3c296 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
       rack (>= 1.2, < 3)
     psych (3.1.0)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails-dom-testing (2.0.3)