diff --git a/2018-05/ts-react-new-features/yarn.lock b/2018-05/ts-react-new-features/yarn.lock
index bf64ae8..7279c27 100644
--- a/2018-05/ts-react-new-features/yarn.lock
+++ b/2018-05/ts-react-new-features/yarn.lock
@@ -4042,8 +4042,8 @@ typescript@2.9.0-rc:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.9.0-rc.tgz#c0fe5d7f2445d664538d21494274814cdfad468d"
 
 ua-parser-js@^0.7.9:
-  version "0.7.18"
-  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.18.tgz#a7bfd92f56edfb117083b69e31d2aa8882d4b1ed"
+  version "0.7.28"
+  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.28.tgz#8ba04e653f35ce210239c64661685bf9121dec31"
 
 uglify-es@^3.2.1, uglify-es@^3.3.9:
   version "3.3.9"