diff --git a/config/protocol.unit_testnet.yml b/config/protocol.unit_testnet.yml
index ff821d161d..84e26a4371 100644
--- a/config/protocol.unit_testnet.yml
+++ b/config/protocol.unit_testnet.yml
@@ -22,6 +22,7 @@ ProtocolConfiguration:
     Basilisk: 6
     Cockatrice: 9
     Domovoi: 12
+    Echidna: 13
 
 ApplicationConfiguration:
   SkipBlockVerification: false
diff --git a/pkg/core/blockchain_neotest_test.go b/pkg/core/blockchain_neotest_test.go
index 8b88ecf33d..79490f8386 100644
--- a/pkg/core/blockchain_neotest_test.go
+++ b/pkg/core/blockchain_neotest_test.go
@@ -272,7 +272,7 @@ func TestBlockchain_StartFromExistingDB(t *testing.T) {
 
 		_, _, _, err = chain.NewMultiWithCustomConfigAndStoreNoCheck(t, customConfig, cache)
 		require.Error(t, err)
-		require.True(t, strings.Contains(err.Error(), fmt.Sprintf("native %s: version mismatch for the latest hardfork Domovoi (stored contract state differs from autogenerated one)", nativenames.CryptoLib)), err)
+		require.True(t, strings.Contains(err.Error(), fmt.Sprintf("native %s: version mismatch for the latest hardfork Echidna (stored contract state differs from autogenerated one)", nativenames.CryptoLib)), err)
 	})
 
 	t.Run("good", func(t *testing.T) {
diff --git a/pkg/core/native/native_test/neo_test.go b/pkg/core/native/native_test/neo_test.go
index 616208c9ab..49450362c2 100644
--- a/pkg/core/native/native_test/neo_test.go
+++ b/pkg/core/native/native_test/neo_test.go
@@ -740,6 +740,13 @@ func TestNEO_CalculateBonus(t *testing.T) {
 	accH := acc.Signers[0].ScriptHash()
 	rewardDistance := 10
 
+	// We have 11 blocks made by transactions above and we need block 13 to get Echidna.
+	// Otherwise this happens:
+	//    logger.go:146: 2024-12-24T17:52:18.160+0300 WARN    contract invocation failed      {"tx": "603d1b0e29e7aaf50513689be9d5bb946c7f7fec8836f0e90897c825fb762c13", "block": 13, "error": "at instruction 120 (SYSCALL): System.Contract.CallNative failed: gas limit exceeded"}
+	for range 3 {
+		e.AddNewBlock(t)
+	}
+
 	t.Run("Zero", func(t *testing.T) {
 		initialGASBalance := e.Chain.GetUtilityTokenBalance(accH)
 		for range rewardDistance {
diff --git a/pkg/services/rpcsrv/client_test.go b/pkg/services/rpcsrv/client_test.go
index 73a373928e..2a1731be3e 100644
--- a/pkg/services/rpcsrv/client_test.go
+++ b/pkg/services/rpcsrv/client_test.go
@@ -2461,6 +2461,7 @@ func TestClient_GetVersion_Hardforks(t *testing.T) {
 		config.HFBasilisk:      6,
 		config.HFCockatrice:    9,
 		config.HFDomovoi:       12,
+		config.HFEchidna:       13,
 	}
 	require.InDeltaMapValues(t, expected, v.Protocol.Hardforks, 0)
 }
diff --git a/pkg/services/rpcsrv/server_test.go b/pkg/services/rpcsrv/server_test.go
index 117bd56f49..da4f7beeb2 100644
--- a/pkg/services/rpcsrv/server_test.go
+++ b/pkg/services/rpcsrv/server_test.go
@@ -121,7 +121,7 @@ const (
 	// not yet deployed to the testing basic chain.
 	invokescriptContractAVM = "VwIADBQBDAMOBQYMDQIODw0DDgcJAAAAAErZMCQE2zBwaEH4J+yMqiYEEUAMFA0PAwIJAAIBAwcDBAUCAQAOBgwJStkwJATbMHFpQfgn7IyqJgQSQBNA"
 	// block20StateRootLE is an LE stateroot of block #20 of basic testing chain.
-	block20StateRootLE = "570ba0814003f6e6a2a2e41d1b727f8af756e9c26d2453c8316868607b66da0a"
+	block20StateRootLE = "310acac4fd692ab7a90dbd7fcf6feaf1ac33aabeedf6592c4ddd08ff1dac15de"
 )
 
 var (