diff --git a/src/main/resources/db/migration/V1.27.0__fix_fk_constraint.sql b/src/main/resources/db/migration/V1.27.0__fix_fk_constraint.sql
new file mode 100644
index 000000000..f6b680464
--- /dev/null
+++ b/src/main/resources/db/migration/V1.27.0__fix_fk_constraint.sql
@@ -0,0 +1,27 @@
+/*
+ * See the NOTICE file distributed with this work for additional information
+ * regarding copyright ownership.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+DO $$
+BEGIN
+     -- Drop foreign key constraint (can't directly alter ON DELETE behavior).
+    ALTER TABLE experiment_program_user_role DROP CONSTRAINT experiment_program_user_role_program_user_role_id_fkey;
+    -- Add foreign key constraint with ON DELETE CASCADE.
+    ALTER TABLE experiment_program_user_role
+    ADD CONSTRAINT experiment_program_user_role_program_user_role_id_fkey
+        FOREIGN KEY (program_user_role_id) REFERENCES program_user_role (id)
+        ON DELETE CASCADE;
+END $$;