diff --git a/.gitignore b/.gitignore
index 9a3630ee..a69d0975 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 data/goerli_slot_6397852.json
 data/goerli_slot_6397952.json
-data/goerli_slot_6399998.json
\ No newline at end of file
+data/goerli_slot_6399998.json
+data/deneb_goerli_slot_7413760.json
+data/deneb_goerli_slot_7421952.json
+data/deneb_goerli_slot_7431952.json
\ No newline at end of file
diff --git a/merkle_util_test.go b/merkle_util_test.go
index 21f2569b..b898e679 100644
--- a/merkle_util_test.go
+++ b/merkle_util_test.go
@@ -394,11 +394,7 @@ func TestStateRootAgainstLatestBlockHeaderProof(t *testing.T) {
 	// ParseCapellaBeaconStateFromJSON(*oracleStateJSON, &oracleState)
 
 	var blockHeader phase0.BeaconBlockHeader
-	buf, err := os.ReadFile("data/goerli_block_header_6399998.json")
-	if err != nil {
-		fmt.Println("read error with header file")
-	}
-	err = blockHeader.UnmarshalJSON(buf)
+	blockHeader, err := ExtractBlockHeader("data/goerli_block_header_6399998.json")
 	if err != nil {
 		fmt.Println("blockHeader.UnmarshalJSON error", err)
 	}