diff --git a/utils/properties/env-properties.ts b/utils/properties/env-properties.ts
index 0c535b93..4cd61786 100644
--- a/utils/properties/env-properties.ts
+++ b/utils/properties/env-properties.ts
@@ -142,4 +142,5 @@ export interface EnvProperties {
   myOrcidLinksPage?: string;
   footerGrantText?: string;
   egiNotebookLink?: string;
+  portalBuildTime?;
 }