diff --git a/2018-10/ten-ts-pro-tips-with-react/yarn.lock b/2018-10/ten-ts-pro-tips-with-react/yarn.lock
index 8aaad4b..05b7803 100644
--- a/2018-10/ten-ts-pro-tips-with-react/yarn.lock
+++ b/2018-10/ten-ts-pro-tips-with-react/yarn.lock
@@ -2927,9 +2927,9 @@ levn@~0.3.0:
     type-check "~0.3.2"
 
 lodash-es@^4.17.5:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash-es/-/lodash-es-4.17.11.tgz#145ab4a7ac5c5e52a3531fb4f310255a152b4be0"
-  integrity sha512-DHb1ub+rMjjrxqlB3H56/6MXtm1lSksDp2rA2cNWjG8mlDUYFhUj3Di2Zn5IwSU87xLv8tNIQ7sSwE/YOX/D/Q==
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash-es/-/lodash-es-4.17.21.tgz#43e626c46e6591b7750beb2b50117390c609e3ee"
+  integrity sha512-mKnC+QJ9pWVzv+C4/U3rRsHapFfHvQFoFB92e52xeyGMcX6/OlIl78je1u8vePzYZSkkogMPJ2yjxxsb89cxyw==
 
 lodash.clone@^4.5.0:
   version "4.5.0"