diff --git a/graphql/graphql.go b/graphql/graphql.go
index f5eec210a5..f25bfd127a 100644
--- a/graphql/graphql.go
+++ b/graphql/graphql.go
@@ -1093,6 +1093,18 @@ func (b *Block) ExcessBlobGas(ctx context.Context) (*hexutil.Uint64, error) {
 	return &ret, nil
 }
 
+func (b *Block) SlotNumber(ctx context.Context) (*hexutil.Uint64, error) {
+	header, err := b.resolveHeader(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if header.SlotNumber == nil {
+		return nil, nil
+	}
+	ret := hexutil.Uint64(*header.SlotNumber)
+	return &ret, nil
+}
+
 // BlockFilterCriteria encapsulates criteria passed to a `logs` accessor inside
 // a block.
 type BlockFilterCriteria struct {