diff --git a/Gemfile.lock b/Gemfile.lock
index 557fcd6..7d3f0e1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,7 +112,8 @@ GEM
       pry (>= 0.10.4)
     puma (3.12.0)
     rack (2.2.2)
-    rack-cors (1.0.2)
+    rack-cors (1.0.5)
+      rack (>= 1.6.0)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.1)