diff --git a/backend/src/db/models/Post.ts b/backend/src/db/models/Post.ts
index 5a42a4182..f3a6f7155 100644
--- a/backend/src/db/models/Post.ts
+++ b/backend/src/db/models/Post.ts
@@ -58,6 +58,7 @@ export default {
     },
   },
   pinned: { type: 'boolean', default: null, valid: [null, true] },
+  groupPinned: { type: 'boolean', default: null, valid: [null, true] },
   postType: { type: 'string', default: 'Article', valid: ['Article', 'Event'] },
   observes: {
     type: 'relationship',