diff --git a/cooper_api/Gemfile.lock b/cooper_api/Gemfile.lock
index 39e5c71..716c086 100644
--- a/cooper_api/Gemfile.lock
+++ b/cooper_api/Gemfile.lock
@@ -106,7 +106,8 @@ GEM
       pry (>= 0.10.4)
     puma (3.12.1)
     rack (2.0.7)
-    rack-cors (1.0.3)
+    rack-cors (1.0.5)
+      rack (>= 1.6.0)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)