diff --git a/typescript/hello-world/yarn.lock b/typescript/hello-world/yarn.lock
index 4ec11a9..f1f588b 100644
--- a/typescript/hello-world/yarn.lock
+++ b/typescript/hello-world/yarn.lock
@@ -1467,8 +1467,8 @@ locate-path@^2.0.0:
     path-exists "^3.0.0"
 
 lodash@^4.14.0, lodash@^4.17.4:
-  version "4.17.4"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 loose-envify@^1.0.0:
   version "1.3.1"