diff --git a/Gemfile.lock b/Gemfile.lock
index ca90a96..ac1594c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     pg (1.1.4)
-    rack (2.0.6)
+    rack (2.2.3)
     rack-cors (1.0.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)