diff --git a/examples/mobx/yarn.lock b/examples/mobx/yarn.lock
index 87d5a48ef..96baefb3d 100644
--- a/examples/mobx/yarn.lock
+++ b/examples/mobx/yarn.lock
@@ -4451,8 +4451,8 @@ type-is@~1.6.15:
     mime-types "~2.1.15"
 
 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@3.2.x:
   version "3.2.2"