diff --git a/src/Umbraco.Web.UI.Client/web-test-runner.config.mjs b/src/Umbraco.Web.UI.Client/web-test-runner.config.mjs
index 9ab51e3df4..384fe2aa3f 100644
--- a/src/Umbraco.Web.UI.Client/web-test-runner.config.mjs
+++ b/src/Umbraco.Web.UI.Client/web-test-runner.config.mjs
@@ -18,6 +18,7 @@ export default {
 						'@umbraco-cms/observable-api': './src/core/observable-api/index.ts',
 						'@umbraco-cms/utils': './src/core/utils/index.ts',
 						'@umbraco-cms/test-utils': './src/core/test-utils/index.ts',
+						'@umbraco-cms/extensions-registry': './src/core/extensions-registry/index.ts',
 					},
 				},
 			},