diff --git a/Gemfile.lock b/Gemfile.lock
index 89f2525..0d864d5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -172,7 +172,7 @@ GEM
       railties (>= 3.0.0)
     public_suffix (3.0.2)
     puma (3.11.4)
-    rack (2.0.4)
+    rack (2.0.7)
     rack-test (1.0.0)
       rack (>= 1.0, < 3)
     rails (5.1.6)