diff --git a/Gemfile.lock b/Gemfile.lock
index 7dc7d6a..6515c63 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -216,7 +216,7 @@ GEM
     public_suffix (3.1.1)
     puma (3.12.4)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)