diff --git a/Gemfile.lock b/Gemfile.lock
index 5529637..47eacbd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -124,7 +124,7 @@ GEM
       concurrent-ruby (~> 1.0, >= 1.0.2)
       railties (>= 4.2)
     racc (1.6.0)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-proxy (0.7.0)