diff --git a/server/migrations/20250917124000-fix-shares-collection-cascade.js b/server/migrations/20250917124000-fix-shares-collection-cascade.js
new file mode 100644
index 0000000000..5d71798d7e
--- /dev/null
+++ b/server/migrations/20250917124000-fix-shares-collection-cascade.js
@@ -0,0 +1,36 @@
+"use strict";
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    // Drop the existing foreign key constraint
+    await queryInterface.sequelize.query(
+      `ALTER TABLE "shares" DROP CONSTRAINT "shares_collectionId_fkey"`
+    );
+
+    // Add the foreign key constraint with CASCADE delete
+    await queryInterface.sequelize.query(`
+      ALTER TABLE "shares"
+      ADD CONSTRAINT "shares_collectionId_fkey" 
+      FOREIGN KEY("collectionId") 
+      REFERENCES "collections" ("id")
+      ON DELETE CASCADE
+    `);
+  },
+
+  async down(queryInterface, Sequelize) {
+    // Drop the cascade constraint
+    await queryInterface.sequelize.query(
+      `ALTER TABLE "shares" DROP CONSTRAINT "shares_collectionId_fkey"`
+    );
+
+    // Add back the original constraint without cascade
+    await queryInterface.sequelize.query(`
+      ALTER TABLE "shares"
+      ADD CONSTRAINT "shares_collectionId_fkey" 
+      FOREIGN KEY("collectionId") 
+      REFERENCES "collections" ("id")
+      ON DELETE NO ACTION
+    `);
+  },
+};