diff --git a/Gemfile.lock b/Gemfile.lock
index ac02685..da1fe48 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,7 +90,7 @@ GEM
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     origin (2.1.1)
-    rack (1.6.11)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.4)