diff --git a/ethtxmanager/ethtxmanager.go b/ethtxmanager/ethtxmanager.go
index f6f6715..5d39028 100644
--- a/ethtxmanager/ethtxmanager.go
+++ b/ethtxmanager/ethtxmanager.go
@@ -508,8 +508,7 @@ func (c *Client) waitMinedTxToBeSafe(ctx context.Context) error {
 		safeBlockNumber = currentBlockNumber - c.cfg.SafeStatusL1NumberOfBlocks
 	} else {
 		// Get Safe block Number
-		safeL1BlockNumberFetch := l1_check_block.NewSafeL1BlockNumberFetch(l1_check_block.SafeBlockNumber, 0)
-		safeBlockNumber, err = safeL1BlockNumberFetch.GetSafeBlockNumber(ctx, c.etherman)
+		safeBlockNumber, err = l1_check_block.L1SafeFetch.BlockNumber(ctx, c.etherman)
 		if err != nil {
 			return fmt.Errorf("failed to get safe block number: %v", err)
 		}
@@ -552,8 +551,7 @@ func (c *Client) waitSafeTxToBeFinalized(ctx context.Context) error {
 		finaLizedBlockNumber = currentBlockNumber - c.cfg.FinalizedStatusL1NumberOfBlocks
 	} else {
 		// Get Network Default value
-		safeL1BlockNumberFetch := l1_check_block.NewSafeL1BlockNumberFetch(l1_check_block.FinalizedBlockNumber, 0)
-		finaLizedBlockNumber, err = safeL1BlockNumberFetch.GetSafeBlockNumber(ctx, c.etherman)
+		finaLizedBlockNumber, err = l1_check_block.L1FinalizedFetch.BlockNumber(ctx, c.etherman)
 		if err != nil {
 			return fmt.Errorf("failed to get finalized block number: %v", err)
 		}
diff --git a/go.mod b/go.mod
index 5913621..5a845fb 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/0xPolygonHermez/zkevm-ethtx-manager
 go 1.21.3
 
 require (
-	github.com/0xPolygonHermez/zkevm-synchronizer-l1 v0.4.0
+	github.com/0xPolygonHermez/zkevm-synchronizer-l1 v0.5.1
 	github.com/ethereum/go-ethereum v1.14.5
 	github.com/hermeznetwork/tracerr v0.3.2
 	github.com/holiman/uint256 v1.2.4
@@ -46,7 +46,7 @@ require (
 	github.com/google/uuid v1.5.0 // indirect
 	github.com/gorilla/websocket v1.5.1 // indirect
 	github.com/holiman/bloomfilter/v2 v2.0.3 // indirect
-	github.com/klauspost/compress v1.17.0 // indirect
+	github.com/klauspost/compress v1.17.2 // indirect
 	github.com/kr/pretty v0.3.1 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/logrusorgru/aurora v2.0.3+incompatible // indirect
diff --git a/go.sum b/go.sum
index d7c6c50..c20bfda 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/0xPolygonHermez/zkevm-synchronizer-l1 v0.4.0 h1:RoEQ9IEZqr5OXP1egWbEF6urQq+frdj+17JeteMIJfA=
-github.com/0xPolygonHermez/zkevm-synchronizer-l1 v0.4.0/go.mod h1:+5qELbp9l/AsnfwMiCl51YCGfvAfaTqVwOKrmWNJoOs=
+github.com/0xPolygonHermez/zkevm-synchronizer-l1 v0.5.1 h1:mL21zEW6p9E/NvopykiRBUqY1GT/3OuOdW2IvZcIC4g=
+github.com/0xPolygonHermez/zkevm-synchronizer-l1 v0.5.1/go.mod h1:fAwP9VXeKdUY7gJu6S4sus72CtPFUEB7+BYFSJYMu8s=
 github.com/DataDog/zstd v1.5.2 h1:vUG4lAyuPCXO0TLbXvPv7EB7cNK1QV/luu55UHLrrn8=
 github.com/DataDog/zstd v1.5.2/go.mod h1:g4AWEaM3yOg3HYfnJ3YIawPnVdXJh9QME85blwSAmyw=
 github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
@@ -140,8 +140,8 @@ github.com/jackpal/go-nat-pmp v1.0.2/go.mod h1:QPH045xvCAeXUZOxsnwmrtiCoxIr9eob+
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
-github.com/klauspost/compress v1.17.0 h1:Rnbp4K9EjcDuVuHtd0dgA4qNuv9yKDYKK1ulpJwgrqM=
-github.com/klauspost/compress v1.17.0/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
+github.com/klauspost/compress v1.17.2 h1:RlWWUY/Dr4fL8qk9YG7DTZ7PDgME2V4csBXA8L/ixi4=
+github.com/klauspost/compress v1.17.2/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=