diff --git a/test/default.test.ts b/test/default.test.ts
index 80cff02..6cc4438 100644
--- a/test/default.test.ts
+++ b/test/default.test.ts
@@ -29,7 +29,7 @@ describe('Create', () => {
           repositoryName: 'aws-cdk-staging-pipeline',
           customStack: (scope, _) => {
             customStack = new CustomStack(scope, 'TestCustomStack');
-            customStack.cfnOutputs.Blub = { value: 'BlubValue' };
+            customStack.cfnOutputs.Blub = new core.CfnOutput(customStack, 'OutputBlub', { value: 'BlubValue ' });
             return customStack;
           },
           gitHub: { owner: 'mmuller88', oauthToken: new core.SecretValue('repo-token') },
diff --git a/test/integ.default.ts b/test/integ.default.ts
index 33a96ca..43d0391 100644
--- a/test/integ.default.ts
+++ b/test/integ.default.ts
@@ -22,7 +22,7 @@ export class IntegTesting {
       repositoryName: 'aws-cdk-staging-pipeline',
       customStack: (scope, _) => {
         const customStack = new CustomStack(scope, 'TestCustomStack');
-        customStack.cfnOutputs.Blub = { value: 'BlubValue' };
+        customStack.cfnOutputs.Blub = new core.CfnOutput(customStack, 'OutputBlub', { value: 'BlubValue ' });
         return customStack;
       },
       manualApprovals: (_) => true,