diff --git a/2018-08/react-ts-refs/yarn.lock b/2018-08/react-ts-refs/yarn.lock
index 3b71c1a..5876df1 100644
--- a/2018-08/react-ts-refs/yarn.lock
+++ b/2018-08/react-ts-refs/yarn.lock
@@ -4103,8 +4103,8 @@ typescript@3.0.1:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.0.1.tgz#43738f29585d3a87575520a4b93ab6026ef11fdb"
 
 ua-parser-js@^0.7.18:
-  version "0.7.18"
-  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.18.tgz#a7bfd92f56edfb117083b69e31d2aa8882d4b1ed"
+  version "0.7.31"
+  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.31.tgz#649a656b191dffab4f21d5e053e27ca17cbff5c6"
 
 unicode-trie@^0.3.1:
   version "0.3.1"