diff --git a/src/demos/testing-a-geospatial-app/0-starting-code/yarn.lock b/src/demos/testing-a-geospatial-app/0-starting-code/yarn.lock
index 1d5db6dc..a18d6420 100644
--- a/src/demos/testing-a-geospatial-app/0-starting-code/yarn.lock
+++ b/src/demos/testing-a-geospatial-app/0-starting-code/yarn.lock
@@ -2162,8 +2162,8 @@ locate-path@^2.0.0:
     path-exists "^3.0.0"
 
 lodash-es@^4.17.4, lodash-es@^4.2.0, lodash-es@^4.2.1:
-  version "4.17.4"
-  resolved "https://unpm.uberinternal.com/lodash-es/-/lodash-es-4.17.4.tgz#dcc1d7552e150a0640073ba9cb31d70f032950e7"
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash-es/-/lodash-es-4.17.21.tgz#43e626c46e6591b7750beb2b50117390c609e3ee"
 
 lodash._baseisequal@^3.0.0:
   version "3.0.7"