diff --git a/backend/src/services/project-membership/project-membership-service.ts b/backend/src/services/project-membership/project-membership-service.ts
index e96247c97..5f03e9a6e 100644
--- a/backend/src/services/project-membership/project-membership-service.ts
+++ b/backend/src/services/project-membership/project-membership-service.ts
@@ -419,9 +419,10 @@ export const projectMembershipServiceFactory = ({
       });
     }
 
-    if (project.version === ProjectVersion.V1) {
-      throw new BadRequestError({ message: "Please upgrade your project on your dashboard" });
-    }
+    // This endpoint should be usable by normal and upgraded projects.
+    // if (project.version === ProjectVersion.V1) {
+    //   throw new BadRequestError({ message: "Please upgrade your project on your dashboard" });
+    // }
 
     const projectMembers = await projectMembershipDAL.findMembershipsByEmail(projectId, emails);