diff --git a/Gemfile.lock b/Gemfile.lock
index 3ed6d6b..9501f50 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -246,7 +246,7 @@ GEM
     psych (2.0.13)
     public_suffix (4.0.6)
     racc (1.5.2)
-    rack (2.2.4)
+    rack (2.2.6.2)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-test (1.1.0)