diff --git a/Gemfile.lock b/Gemfile.lock
index 74dd94e..5154238 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,7 +109,7 @@ GEM
     orm_adapter (0.5.0)
     public_suffix (3.0.0)
     puma (3.12.2)
-    rack (2.1.1)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.4)