diff --git a/Gemfile.lock b/Gemfile.lock
index 33a4193..3bfd7da 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,7 +43,7 @@ GEM
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)
     public_suffix (2.0.5)
-    rack (1.6.5)
+    rack (1.6.13)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)