diff --git a/Gemfile.lock b/Gemfile.lock
index fa6ef1a..d8050ba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,7 +40,8 @@ GEM
     nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
     rack (2.0.6)
-    rack-cors (1.0.2)
+    rack-cors (1.0.5)
+      rack (>= 1.6.0)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails-dom-testing (2.0.3)