diff --git a/migrations/20240630010030_workspace_member_foreign_key.sql b/migrations/20240630010030_workspace_member_foreign_key.sql
new file mode 100644
index 00000000..9ff48923
--- /dev/null
+++ b/migrations/20240630010030_workspace_member_foreign_key.sql
@@ -0,0 +1,3 @@
+ALTER TABLE public.af_workspace_member
+ADD CONSTRAINT af_workspace_member_uid_fkey
+FOREIGN KEY (uid) REFERENCES af_user(uid) ON DELETE CASCADE;