diff --git a/packages/core/src/ApiObject.ts b/packages/core/src/ApiObject.ts
index 2b80645..aadbaac 100644
--- a/packages/core/src/ApiObject.ts
+++ b/packages/core/src/ApiObject.ts
@@ -26,7 +26,7 @@ export abstract class ApiObject {
 
     toYaml(): string {
         const { name, ...rest } = this;
-        return yaml.stringify(rest, { schema: 'yaml-1.1' });
+        return yaml.stringify(rest, { schema: 'yaml-1.1', aliasDuplicateObjects: false });
     }
 }
 
diff --git a/packages/core/src/Helm.ts b/packages/core/src/Helm.ts
index a0c44dd..86b6b6f 100644
--- a/packages/core/src/Helm.ts
+++ b/packages/core/src/Helm.ts
@@ -87,7 +87,10 @@ export class Helm {
             let tmpValuesDir = '';
             if (args.valuesObject) {
                 try {
-                    const content = yaml.stringify(args.valuesObject, { schema: 'yaml-1.1' });
+                    const content = yaml.stringify(args.valuesObject, {
+                        schema: 'yaml-1.1',
+                        aliasDuplicateObjects: false,
+                    });
                     tmpValuesDir = fs.mkdtempSync(path.join(os.tmpdir(), 'k8skonf-helm-values-'), {
                         encoding: 'utf-8',
                     });