diff --git a/packages/backend/src/models/repositories/instance.ts b/packages/backend/src/models/repositories/instance.ts
index e9ee18ea3..5f0fd8d58 100644
--- a/packages/backend/src/models/repositories/instance.ts
+++ b/packages/backend/src/models/repositories/instance.ts
@@ -30,6 +30,7 @@ export const InstanceRepository = db.getRepository(Instance).extend({
 			maintainerEmail: instance.maintainerEmail,
 			iconUrl: instance.iconUrl,
 			faviconUrl: instance.faviconUrl,
+			themeColor: instance.themeColor,
 			infoUpdatedAt: instance.infoUpdatedAt ? instance.infoUpdatedAt.toISOString() : null,
 		};
 	},