diff --git a/app/assets/javascripts/packages_and_registries/settings/group/components/packages_forwarding_settings.vue b/app/assets/javascripts/packages_and_registries/settings/group/components/packages_forwarding_settings.vue
index 9c50a8fb549c61ac8b5a0575105db36466c5db84..22528ddb026a0824e232ff79a91b8d157a8ae750 100644
--- a/app/assets/javascripts/packages_and_registries/settings/group/components/packages_forwarding_settings.vue
+++ b/app/assets/javascripts/packages_and_registries/settings/group/components/packages_forwarding_settings.vue
@@ -152,7 +152,10 @@ export default {
       }
     },
     updateWorkingCopy(type, value) {
-      this.$set(this.workingCopy, type, value);
+      this.workingCopy = {
+        ...this.workingCopy,
+        [type]: value,
+      };
     },
   },
   links: {