diff --git a/Gemfile.lock b/Gemfile.lock
index 91c3402..cee6eba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -220,7 +220,8 @@ GEM
     puma (3.12.0)
     raabro (1.1.6)
     rack (2.0.6)
-    rack-cors (1.0.2)
+    rack-cors (1.0.5)
+      rack (>= 1.6.0)
     rack-pjax (1.0.0)
       nokogiri (~> 1.5)
       rack (>= 1.1)