diff --git a/Gemfile.lock b/Gemfile.lock
index 8fe3883..31ec254 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -139,7 +139,7 @@ GEM
     popper_js (1.14.5)
     public_suffix (4.0.1)
     puma (3.12.2)
-    rack (2.0.7)
+    rack (2.2.3.1)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-proxy (0.6.5)