diff --git a/Gemfile.lock b/Gemfile.lock
index 9f1f103..bfdd0ef 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     erubis (2.7.0)
-    rack (2.0.7)
+    rack (2.2.3)
     roda (3.24.0)
       rack
     tilt (2.0.9)