diff --git a/Gemfile.lock b/Gemfile.lock
index cce7374..d2c9b85 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -201,7 +201,7 @@ GEM
       font-awesome-sass (~> 4.6.2)
       sass (~> 3.4.15)
     puma (3.8.2)
-    rack (2.0.1)
+    rack (2.0.7)
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)