diff --git a/eth/catalyst/api.go b/eth/catalyst/api.go
index 75b263bf6b..a5a9b9372c 100644
--- a/eth/catalyst/api.go
+++ b/eth/catalyst/api.go
@@ -442,6 +442,12 @@ func (api *ConsensusAPI) GetPayloadV3(payloadID engine.PayloadID) (*engine.Execu
 // GetPayloadV4 returns a cached payload by id. This endpoint should only
 // be used for the Prague fork.
 func (api *ConsensusAPI) GetPayloadV4(payloadID engine.PayloadID) (*engine.ExecutionPayloadEnvelope, error) {
+	// Reject the request if Osaka has been activated.
+	// follow https://github.com/ethereum/execution-apis/blob/main/src/engine/osaka.md#prague-api
+	head := api.eth.BlockChain().CurrentHeader()
+	if !api.checkFork(head.Time, forks.Prague) {
+		return nil, unsupportedForkErr("engine_getPayloadV4 is only available at Prague fork")
+	}
 	if !payloadID.Is(engine.PayloadV3) {
 		return nil, engine.UnsupportedFork
 	}
@@ -454,6 +460,10 @@ func (api *ConsensusAPI) GetPayloadV4(payloadID engine.PayloadID) (*engine.Execu
 // This method follows the same specification as engine_getPayloadV4 with
 // changes of returning BlobsBundleV2 with BlobSidecar version 1.
 func (api *ConsensusAPI) GetPayloadV5(payloadID engine.PayloadID) (*engine.ExecutionPayloadEnvelope, error) {
+	head := api.eth.BlockChain().CurrentHeader()
+	if api.config().LatestFork(head.Time) < forks.Osaka {
+		return nil, unsupportedForkErr("engine_getPayloadV5 is not available before Osaka fork")
+	}
 	if !payloadID.Is(engine.PayloadV3) {
 		return nil, engine.UnsupportedFork
 	}