diff --git a/Gemfile.lock b/Gemfile.lock
index 183f2bb..89d1d79 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,7 +126,7 @@ GEM
     orm_adapter (0.5.0)
     pg (0.21.0)
     puma (3.9.1)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-cors (1.0.5)
       rack (>= 1.6.0)
     rack-pjax (1.0.0)