diff --git a/Gemfile.lock b/Gemfile.lock
index 4c1d0383..8cef2ff7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -267,7 +267,7 @@ GEM
     pusher-signature (0.1.8)
     pygments.rb (2.2.0)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-protection (2.2.2)
       rack
     rack-test (1.1.0)