diff --git a/web/Gemfile.lock b/web/Gemfile.lock
index 5278195..69c4f88 100644
--- a/web/Gemfile.lock
+++ b/web/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
     minitest (5.9.0)
     multi_json (1.12.1)
     power_assert (0.3.0)
-    rack (2.0.1)
+    rack (2.0.8)
     rack-test (0.6.3)
       rack (>= 1.0)
     rake (11.2.2)