diff --git a/Gemfile.lock b/Gemfile.lock
old mode 100755
new mode 100644
index 851b120..f28f09d
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -119,7 +119,8 @@ GEM
     pg (0.18.4)
     pkg-config (1.1.7)
     rack (2.0.1)
-    rack-cors (0.4.0)
+    rack-cors (1.0.5)
+      rack (>= 1.6.0)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.0)