diff --git a/Gemfile.lock b/Gemfile.lock
index eaf4077..ec2d806 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -221,7 +221,7 @@ GEM
       activerecord (>= 4.0, < 5.3)
     public_suffix (3.0.3)
     puma (3.12.0)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-cors (1.0.6)
       rack (>= 1.6.0)
     rack-test (1.1.0)