diff --git a/rpc/block.go b/rpc/block.go
index 98ea71f6ed..b0a55e1954 100644
--- a/rpc/block.go
+++ b/rpc/block.go
@@ -87,7 +87,7 @@ type BlockHeader struct {
 	Timestamp        uint64         `json:"timestamp"`
 	SequencerAddress *felt.Felt     `json:"sequencer_address,omitempty"`
 	L1GasPrice       *ResourcePrice `json:"l1_gas_price"`
-	StarknetVersion  string         `json:"starknet_version,omitempty"`
+	StarknetVersion  string         `json:"starknet_version"`
 }
 
 // https://github.com/starkware-libs/starknet-specs/blob/a789ccc3432c57777beceaa53a34a7ae2f25fda0/api/starknet_api_openrpc.json#L1131
diff --git a/rpc/handlers_test.go b/rpc/handlers_test.go
index a8ae06a241..c38c025213 100644
--- a/rpc/handlers_test.go
+++ b/rpc/handlers_test.go
@@ -3401,7 +3401,7 @@ func TestSubscribeNewHeadsAndUnsubscribe(t *testing.T) {
 	syncCancel()
 
 	// Receive a block header.
-	want := `{"jsonrpc":"2.0","method":"juno_subscribeNewHeads","params":{"result":{"block_hash":"0x4e1f77f39545afe866ac151ac908bd1a347a2a8a7d58bef1276db4f06fdf2f6","parent_hash":"0x2a70fb03fe363a2d6be843343a1d81ce6abeda1e9bd5cc6ad8fa9f45e30fdeb","block_number":2,"new_root":"0x3ceee867d50b5926bb88c0ec7e0b9c20ae6b537e74aac44b8fcf6bb6da138d9","timestamp":1637084470,"sequencer_address":"0x0","l1_gas_price":{"price_in_fri":"0x0","price_in_wei":"0x0"}},"subscription":%d}}`
+	want := `{"jsonrpc":"2.0","method":"juno_subscribeNewHeads","params":{"result":{"block_hash":"0x4e1f77f39545afe866ac151ac908bd1a347a2a8a7d58bef1276db4f06fdf2f6","parent_hash":"0x2a70fb03fe363a2d6be843343a1d81ce6abeda1e9bd5cc6ad8fa9f45e30fdeb","block_number":2,"new_root":"0x3ceee867d50b5926bb88c0ec7e0b9c20ae6b537e74aac44b8fcf6bb6da138d9","timestamp":1637084470,"sequencer_address":"0x0","l1_gas_price":{"price_in_fri":"0x0","price_in_wei":"0x0"},"starknet_version":""},"subscription":%d}}`
 	want = fmt.Sprintf(want, id)
 	got := make([]byte, len(want))
 	_, err := clientConn.Read(got)
@@ -3500,7 +3500,7 @@ func TestMultipleSubscribeNewHeadsAndUnsubscribe(t *testing.T) {
 	syncCancel()
 
 	// Receive a block header.
-	want = `{"jsonrpc":"2.0","method":"juno_subscribeNewHeads","params":{"result":{"block_hash":"0x4e1f77f39545afe866ac151ac908bd1a347a2a8a7d58bef1276db4f06fdf2f6","parent_hash":"0x2a70fb03fe363a2d6be843343a1d81ce6abeda1e9bd5cc6ad8fa9f45e30fdeb","block_number":2,"new_root":"0x3ceee867d50b5926bb88c0ec7e0b9c20ae6b537e74aac44b8fcf6bb6da138d9","timestamp":1637084470,"sequencer_address":"0x0","l1_gas_price":{"price_in_fri":"0x0","price_in_wei":"0x0"}},"subscription":%d}}`
+	want = `{"jsonrpc":"2.0","method":"juno_subscribeNewHeads","params":{"result":{"block_hash":"0x4e1f77f39545afe866ac151ac908bd1a347a2a8a7d58bef1276db4f06fdf2f6","parent_hash":"0x2a70fb03fe363a2d6be843343a1d81ce6abeda1e9bd5cc6ad8fa9f45e30fdeb","block_number":2,"new_root":"0x3ceee867d50b5926bb88c0ec7e0b9c20ae6b537e74aac44b8fcf6bb6da138d9","timestamp":1637084470,"sequencer_address":"0x0","l1_gas_price":{"price_in_fri":"0x0","price_in_wei":"0x0"},"starknet_version":""},"subscription":%d}}`
 	firstWant = fmt.Sprintf(want, firstID)
 	_, firstGot, err = conn1.Read(ctx)
 	require.NoError(t, err)