diff --git a/app-angular2/src/main/webapp/yarn.lock b/app-angular2/src/main/webapp/yarn.lock
index 01371779..34d250c8 100644
--- a/app-angular2/src/main/webapp/yarn.lock
+++ b/app-angular2/src/main/webapp/yarn.lock
@@ -211,8 +211,8 @@ systemjs@0.19.40:
     when "^3.7.5"
 
 tree-kill@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.1.0.tgz#c963dcf03722892ec59cba569e940b71954d1729"
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.2.2.tgz#4ca09a9092c88b73a7cdc5e8a01b507b0790a0cc"
 
 typescript@~2.1.0:
   version "2.1.6"