diff --git a/Gemfile.lock b/Gemfile.lock
index 77c821a..0611623 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,7 +107,7 @@ GEM
       nio4r (~> 2.0)
     pygments.rb (1.2.1)
       multi_json (>= 1.0.0)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-contrib (2.1.0)
       rack (~> 2.0)
     rack-google_analytics (1.0.2)