diff --git a/python/eth_erc20/erc20.py b/python/eth_erc20/erc20.py
index 0632fdd..00725c4 100644
--- a/python/eth_erc20/erc20.py
+++ b/python/eth_erc20/erc20.py
@@ -148,7 +148,7 @@ class ERC20(TxFactory):
         return tx
 
 
-    def transfer_from(self, contract_address, sender_address, holder_address, recipient_address, value, tx_format=TxFormat.JSONRPC):
+    def transfer_from(self, contract_address, sender_address, holder_address, recipient_address, value, tx_format=TxFormat.JSONRPC, id_generator=None):
         enc = ABIContractEncoder()
         enc.method('transferFrom')
         enc.typ(ABIContractType.ADDRESS)
@@ -164,7 +164,7 @@ class ERC20(TxFactory):
         return tx
 
 
-    def approve(self, contract_address, sender_address, spender_address, value, tx_format=TxFormat.JSONRPC):
+    def approve(self, contract_address, sender_address, spender_address, value, tx_format=TxFormat.JSONRPC, id_generator=None):
         enc = ABIContractEncoder()
         enc.method('approve')
         enc.typ(ABIContractType.ADDRESS)
diff --git a/python/eth_erc20/runnable/balance.py b/python/eth_erc20/runnable/balance.py
index 82953c9..c6439e6 100644
--- a/python/eth_erc20/runnable/balance.py
+++ b/python/eth_erc20/runnable/balance.py
@@ -61,7 +61,7 @@ token_address = config.get('_EXEC_ADDRESS')
 
 
 def main():
-    g = ERC20(chain_spec=chain_spec)
+    g = ERC20(chain_spec=chain_spec, gas_oracle=rpc.get_gas_oracle())
 
     # determine decimals
     decimals_o = g.decimals(token_address)
diff --git a/python/requirements.txt b/python/requirements.txt
index 4853f8d..b2de75f 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,4 +1,4 @@
 confini>=0.3.6rc3,<0.5.0
 crypto-dev-signer>=0.4.15a1,<=0.4.15
-chainlib-eth>=0.0.9a3,<=0.1.0
+chainlib-eth>=0.0.9a9,<=0.1.0
 potaahto~=0.0.1a2
diff --git a/python/setup.cfg b/python/setup.cfg
index 17ab4a2..1a58b19 100644
--- a/python/setup.cfg
+++ b/python/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = eth-erc20
-version = 0.1.2a2
+version = 0.1.2a3
 description = ERC20 interface and simple contract with deployment script that lets any address mint and gift itself tokens.
 author = Louis Holbrook
 author_email = dev@holbrook.no