diff --git a/Gemfile.lock b/Gemfile.lock
index a96197f..e65f742 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -174,7 +174,7 @@ GEM
     popper_js (1.11.1)
     public_suffix (3.1.1)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)