diff --git a/packages/validator/test/unit/services/block.test.ts b/packages/validator/test/unit/services/block.test.ts
index c98653bc2fed..2639d9c84a35 100644
--- a/packages/validator/test/unit/services/block.test.ts
+++ b/packages/validator/test/unit/services/block.test.ts
@@ -49,7 +49,8 @@ describe("BlockDutiesService", function () {
     });
 
     const clock = new ClockMock();
-    const blockService = new BlockProposingService(config, loggerVc, api, clock, validatorStore, null);
+    // use produceBlockV3
+    const blockService = new BlockProposingService(config, loggerVc, api, clock, validatorStore, null, true);
 
     const signedBlock = ssz.phase0.SignedBeaconBlock.defaultValue();
     validatorStore.signRandao.resolves(signedBlock.message.body.randaoReveal);