diff --git a/v4-client-py/pyproject.toml b/v4-client-py/pyproject.toml
index 231678c5..9ca171a1 100644
--- a/v4-client-py/pyproject.toml
+++ b/v4-client-py/pyproject.toml
@@ -5,7 +5,7 @@ package-dir = {"" = "v4_client_py"}
 
 [tool.poetry]
 name = "v4-client-py"
-version = "0.6.9"
+version = "0.7.0"
 description = "dYdX v4 Client"
 authors = ["John Huang <contact@dydx.exchange>"]
 license = "BSL-1.1"
diff --git a/v4-client-py/v4_client_py/chain/aerial/client/utils.py b/v4-client-py/v4_client_py/chain/aerial/client/utils.py
index a4ed6ebc..09622770 100644
--- a/v4-client-py/v4_client_py/chain/aerial/client/utils.py
+++ b/v4-client-py/v4_client_py/chain/aerial/client/utils.py
@@ -18,7 +18,7 @@ def prepare_and_broadcast_basic_transaction(
     gas_limit: Optional[int] = None,
     memo: Optional[str] = None,
     broadcast_mode: BroadcastMode = None,
-    fee: int = 5000,
+    fee: Optional[int] = None,
 ) -> SubmittedTx:
     """Prepare and broadcast basic transaction.
 
@@ -36,7 +36,8 @@ def prepare_and_broadcast_basic_transaction(
     # query the account information for the sender
     if account is None:
         account = client.query_account(sender.address())
-
+    if fee is None:
+        fee = client.network_config.fee_minimum_gas_price
     if gas_limit is None:
 
         # we need to build up a representative transaction so that we can accurately simulate it
diff --git a/v4-client-py/v4_client_py/chain/aerial/config.py b/v4-client-py/v4_client_py/chain/aerial/config.py
index 18732289..97c6b2b4 100644
--- a/v4-client-py/v4_client_py/chain/aerial/config.py
+++ b/v4-client-py/v4_client_py/chain/aerial/config.py
@@ -78,10 +78,10 @@ def fetch_dydx_testnet(cls) -> "NetworkConfig":
         :return: Network configuration
         """
         return NetworkConfig(
-            chain_id="dydx",
-            url="grpc+https://v4.testnet.dydx.exchange",
-            fee_minimum_gas_price=5000000000,
-            fee_denomination="dv4tnt",
+            chain_id="dydx-testnet-4",
+            url="grpc+https://dydx-testnet-archive.allthatnode.com:9090",
+            fee_minimum_gas_price=4630550000000000,
+            fee_denomination="adv4tnt",
             staking_denomination="dv4tnt",
             faucet_url="http://faucet.v4testnet.dydx.exchange",
         )
diff --git a/v4-client-py/v4_client_py/clients/modules/post.py b/v4-client-py/v4_client_py/clients/modules/post.py
index f77a91bb..7fc1bc7f 100644
--- a/v4-client-py/v4_client_py/clients/modules/post.py
+++ b/v4-client-py/v4_client_py/clients/modules/post.py
@@ -43,8 +43,7 @@ def send_message(
         '''
 
         wallet = subaccount.wallet
-        url = ('grpc+https://' if self.config.ssl_enabled else 'grpc+http://') + self.config.grpc_endpoint
-        network = NetworkConfig(self.config.chain_id, 0, None, None, url, None)
+        network = NetworkConfig.fetch_dydx_testnet()
         ledger = LedgerClient(network)
         tx = Transaction()
         tx.add_message(msg)
@@ -57,7 +56,7 @@ def send_message(
             gas_limit=gas_limit,
             memo=None,
             broadcast_mode=broadcast_mode if (broadcast_mode != None) else self.default_broadcast_mode(msg),
-            fee=0 if zeroFee else 5000,
+            fee=0 if zeroFee else None,
             )
     
     def place_order(