diff --git a/Gemfile.lock b/Gemfile.lock
index c389c8f..e3d31d5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
     parser (2.7.1.3)
       ast (~> 2.4.0)
     powerpack (0.1.2)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-protection (2.0.8.1)
       rack
     rainbow (3.0.0)