diff --git a/lib/seeders/class-seeder.ts b/lib/seeders/class-seeder.ts
index 81f77d7..f53bf77 100644
--- a/lib/seeders/class-seeder.ts
+++ b/lib/seeders/class-seeder.ts
@@ -51,7 +51,7 @@ export class ClassSeeder<
     const refs = pilferReferences(records);
     ctx.unresolvedReferences = ctx.unresolvedReferences.concat(refs);
     this.logger.debug(`Saving records ...`);
-    let saved = await repo.save(records);
+    let saved = await repo.save(records.map(r => ({...r})));
     ctx.savedEntities.set(this.seedClass, saved);
     this.logger.debug(`Saved.`);
     const resolvePromises = [];
diff --git a/package-lock.json b/package-lock.json
index ff53eb1..e033d14 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "nestjs-class-seeder",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "nestjs-class-seeder",
-      "version": "1.2.0",
+      "version": "1.2.1",
       "license": "MIT",
       "dependencies": {
         "@faker-js/faker": "^7.4.0",
diff --git a/package.json b/package.json
index 2b71e56..a6634af 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "nestjs-class-seeder",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "description": "An extension library for NestJS to perform seeding. Forked from nestjs-seeder",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",