diff --git a/Gemfile.lock b/Gemfile.lock
index b8cc576..7b2fc6c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -125,7 +125,7 @@ GEM
       premailer (~> 1.7, >= 1.7.9)
     public_suffix (3.0.2)
     puma (3.11.3)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-test (0.8.3)
       rack (>= 1.0, < 3)
     rails (5.1.5)