diff --git a/apps/api/src/migrations/delete-environment-for-deleted-project/delete-environment-for-deleted-project.ts b/apps/api/src/migrations/delete-environment-for-deleted-project/delete-environment-for-deleted-project.ts
new file mode 100644
index 00000000..736cce47
--- /dev/null
+++ b/apps/api/src/migrations/delete-environment-for-deleted-project/delete-environment-for-deleted-project.ts
@@ -0,0 +1,101 @@
+/**
+ * Migration script for deleting environments associated with deleted projects.
+ *
+ * This migration is designed to clean up environment documents that are still
+ * associated with projects that have already been deleted. In older versions
+ * of the system, if a project was deleted, the corresponding environment
+ * documents were not automatically deleted. This issue has been fixed in
+ * newer versions, but for older users, we need to run this migration to
+ * ensure that any environments associated with deleted projects are properly removed.
+ */
+
+import '../../config';
+import { AppModule } from '../../app.module';
+
+import { NestFactory } from '@nestjs/core';
+import { EnvironmentRepository } from '@impler/dal';
+export async function run() {
+  const app = await NestFactory.create(AppModule, {
+    logger: false,
+  });
+
+  const environmentRepository = new EnvironmentRepository();
+  const deletedProjectsInEnvironments = await environmentRepository.aggregate([
+    {
+      $lookup: {
+        from: 'project',
+        localField: '_projectId',
+        foreignField: '_id',
+        as: 'project',
+      },
+    },
+    {
+      $match: {
+        project: {
+          $size: 0,
+        },
+      },
+    },
+    {
+      $unwind: {
+        path: '$apiKeys',
+        preserveNullAndEmptyArrays: false,
+      },
+    },
+    {
+      $lookup: {
+        from: 'users',
+        localField: 'apiKeys._userId',
+        foreignField: '_id',
+        as: 'userInfo',
+      },
+    },
+    {
+      $unwind: {
+        path: '$userInfo',
+        preserveNullAndEmptyArrays: true,
+      },
+    },
+    {
+      $project: {
+        _id: 1,
+        _projectId: 1,
+        apiKeys: {
+          _userId: '$apiKeys._userId',
+          // key: "$apiKeys.key",
+          user: {
+            firstName: '$userInfo.firstName',
+            lastName: '$userInfo.lastName',
+            email: '$userInfo.email',
+          },
+        },
+      },
+    },
+    {
+      $group: {
+        _id: '$_id',
+        _projectId: {
+          $first: '$_projectId',
+        },
+        apiKeys: {
+          $push: '$apiKeys',
+        },
+      },
+    },
+  ]);
+
+  const deletedProjectIdInEnvironment = deletedProjectsInEnvironments.map((deletedProjects) => deletedProjects._id);
+
+  if (deletedProjectIdInEnvironment.length > 0) {
+    await environmentRepository.deleteMany({
+      _id: { $in: deletedProjectIdInEnvironment },
+    });
+    console.log(`end migration - deleted ${deletedProjectIdInEnvironment.length} environments.`);
+  } else {
+    console.log('end migration - No environments found to delete.');
+  }
+
+  app.close();
+  process.exit(0);
+}
+run();