diff --git a/operator/duties/proposer.go b/operator/duties/proposer.go
index 373625d7e7..cbfa6ae150 100644
--- a/operator/duties/proposer.go
+++ b/operator/duties/proposer.go
@@ -3,6 +3,7 @@ package duties
 import (
 	"context"
 	"fmt"
+	genesisspectypes "github.com/ssvlabs/ssv-spec-pre-cc/types"
 	"time"
 
 	eth2apiv1 "github.com/attestantio/go-eth2-client/api/v1"
@@ -134,6 +135,17 @@ func (h *ProposerHandler) processExecution(epoch phase0.Epoch, slot phase0.Slot)
 		return
 	}
 
+	if !h.network.PastAlanForkAtEpoch(h.network.Beacon.EstimatedEpochAtSlot(slot)) {
+		toExecute := make([]*genesisspectypes.Duty, 0, len(duties)*2)
+		for _, d := range duties {
+			if h.shouldExecute(d) {
+				toExecute = append(toExecute, h.toGenesisSpecDuty(d, genesisspectypes.BNRoleProposer))
+			}
+		}
+
+		h.dutiesExecutor.ExecuteGenesisDuties(h.logger, toExecute)
+		return
+	}
 	// range over duties and execute
 	toExecute := make([]*spectypes.ValidatorDuty, 0, len(duties))
 	for _, d := range duties {
@@ -191,6 +203,15 @@ func (h *ProposerHandler) toSpecDuty(duty *eth2apiv1.ProposerDuty, role spectype
 	}
 }
 
+func (h *ProposerHandler) toGenesisSpecDuty(duty *eth2apiv1.ProposerDuty, role genesisspectypes.BeaconRole) *genesisspectypes.Duty {
+	return &genesisspectypes.Duty{
+		Type:           role,
+		PubKey:         duty.PubKey,
+		Slot:           duty.Slot,
+		ValidatorIndex: duty.ValidatorIndex,
+	}
+}
+
 func (h *ProposerHandler) shouldExecute(duty *eth2apiv1.ProposerDuty) bool {
 	currentSlot := h.network.Beacon.EstimatedCurrentSlot()
 	// execute task if slot already began and not pass 1 slot