diff --git a/Gemfile.lock b/Gemfile.lock
index 2843ac1..fde6683 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -77,7 +77,7 @@ GEM
     pygments.rb (0.6.3)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.2.0)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-protection (2.2.0)
       rack
     rake (12.3.3)