diff --git a/Gemfile.lock b/Gemfile.lock
index 3a790d7..7d1813b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -203,7 +203,7 @@ GEM
     polyamorous (1.2.0)
       activerecord (>= 3.0)
     puma (3.2.0)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-contrib (1.4.0)
       git-version-bump (~> 0.15)
       rack (~> 1.4)