diff --git a/Gemfile.lock b/Gemfile.lock
index 6f50c18..eaa7f38 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,7 +26,7 @@ GEM
       ast (~> 2.4.0)
     powerpack (0.1.2)
     raabro (1.3.1)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rack-protection (2.0.8.1)
       rack
     rainbow (2.2.2)