diff --git a/validator/web_validator/Gemfile.lock b/validator/web_validator/Gemfile.lock
index a035cfc..faac099 100644
--- a/validator/web_validator/Gemfile.lock
+++ b/validator/web_validator/Gemfile.lock
@@ -12,7 +12,7 @@ GEM
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     racc (1.6.2)
-    rack (2.2.4)
+    rack (2.2.9)
     rack-protection (3.0.5)
       rack
     ruby2_keywords (0.0.5)