diff --git a/Gemfile.lock b/Gemfile.lock
index 9a1edbc..70bc2d7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -82,7 +82,7 @@ GEM
     nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
     puma (3.12.0)
-    rack (2.0.5)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.7)