diff --git a/lib/archethic/mining/pending_transaction_validation.ex b/lib/archethic/mining/pending_transaction_validation.ex
index 9bd2de28e..6ac6ef14a 100644
--- a/lib/archethic/mining/pending_transaction_validation.ex
+++ b/lib/archethic/mining/pending_transaction_validation.ex
@@ -69,6 +69,19 @@ defmodule Archethic.Mining.PendingTransactionValidation do
 
   @tx_max_size Application.compile_env!(:archethic, :transaction_data_content_max_size)
 
+  @prod? Mix.env() == :prod
+
+  @doc """
+  Ensure transaction version is allowed
+  Used to differentiate mainnet / testnet network
+  """
+  @spec(validate_transaction_version(transaction :: Transaction.t()) :: :ok, {:error, String.t()})
+  def validate_transaction_version(%Transaction{version: version}) do
+    if @prod? and System.get_env("ARCHETHIC_NETWORK_TYPE") != "testnet" and version >= 4,
+      do: {:error, "Transaction V4 are not yet supported on mainnet"},
+      else: :ok
+  end
+
   @doc """
   Ensure transaction size does not exceed the limit size
   """
diff --git a/lib/archethic/mining/validation_context.ex b/lib/archethic/mining/validation_context.ex
index 8b1a127dd..49b8d66de 100644
--- a/lib/archethic/mining/validation_context.ex
+++ b/lib/archethic/mining/validation_context.ex
@@ -301,7 +301,8 @@ defmodule Archethic.Mining.ValidationContext do
       ) do
     start = System.monotonic_time()
 
-    with :ok <- PendingTransactionValidation.validate_previous_public_key(tx),
+    with :ok <- PendingTransactionValidation.validate_transaction_version(tx),
+         :ok <- PendingTransactionValidation.validate_previous_public_key(tx),
          :ok <- PendingTransactionValidation.validate_previous_signature(tx),
          :ok <- PendingTransactionValidation.validate_size(tx),
          :ok <- PendingTransactionValidation.validate_contract(tx),