diff --git a/state/forkid.go b/state/forkid.go
index 0db73fc996..ed035a53e1 100644
--- a/state/forkid.go
+++ b/state/forkid.go
@@ -17,6 +17,8 @@ const (
 	FORKID_ETROG = 7
 	// FORKID_ELDERBERRY is the fork id 8
 	FORKID_ELDERBERRY = 8
+	// FORKID_9 is the fork id 9
+	FORKID_9 = 9
 )
 
 // ForkIDInterval is a fork id interval
diff --git a/synchronizer/actions/forksids.go b/synchronizer/actions/forksids.go
index 58b8250376..1383ef98c5 100644
--- a/synchronizer/actions/forksids.go
+++ b/synchronizer/actions/forksids.go
@@ -12,6 +12,8 @@ const (
 	ForkIDEtrog = ForkIdType(7) //nolint:gomnd
 	// ForkIDElderberry is the forkId for Elderberry
 	ForkIDElderberry = ForkIdType(8) //nolint:gomnd
+	// ForkID9 is the forkId for 9
+	ForkID9 = ForkIdType(9) //nolint:gomnd
 )
 
 var (
@@ -20,7 +22,7 @@ var (
 	ForksIdAll = []ForkIdType{WildcardForkId}
 
 	// ForksIdOnlyElderberry support only elderberry forkId
-	ForksIdOnlyElderberry = []ForkIdType{ForkIDElderberry}
+	ForksIdOnlyElderberry = []ForkIdType{ForkIDElderberry, ForkID9}
 
 	// ForksIdOnlyEtrog support only etrog forkId
 	ForksIdOnlyEtrog = []ForkIdType{ForkIDEtrog}
diff --git a/synchronizer/synchronizer.go b/synchronizer/synchronizer.go
index c90b95c797..afc3da324f 100644
--- a/synchronizer/synchronizer.go
+++ b/synchronizer/synchronizer.go
@@ -129,6 +129,7 @@ func NewSynchronizer(
 		res.syncTrustedStateExecutor = l2_shared.NewSyncTrustedStateExecutorSelector(map[uint64]syncinterfaces.SyncTrustedStateExecutor{
 			uint64(state.FORKID_ETROG):      syncTrustedStateEtrog,
 			uint64(state.FORKID_ELDERBERRY): syncTrustedStateEtrog,
+			uint64(state.FORKID_9):          syncTrustedStateEtrog,
 		}, res.state)
 	}
 	var l1checkerL2Blocks *actions.CheckL2BlockHash