diff --git a/Gemfile.lock b/Gemfile.lock
index 0b1493f..2238d3e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -123,7 +123,8 @@ 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)