diff --git a/Chapter09/frontend/yarn.lock b/Chapter09/frontend/yarn.lock
index 8d032cbc..aa77c102 100644
--- a/Chapter09/frontend/yarn.lock
+++ b/Chapter09/frontend/yarn.lock
@@ -3490,8 +3490,8 @@ typescript@^2.6.2:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.6.2.tgz#3c5b6fd7f6de0914269027f03c0946758f7673a4"
 
 ua-parser-js@^0.7.9:
-  version "0.7.17"
-  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.17.tgz#e9ec5f9498b9ec910e7ae3ac626a805c4d09ecac"
+  version "0.7.33"
+  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.33.tgz#1d04acb4ccef9293df6f70f2c3d22f3030d8b532"
 
 uglify-js@^2.8.27:
   version "2.8.29"