diff --git a/python/eth_contract_registry/runnable/deploy.py b/python/eth_contract_registry/runnable/deploy.py
index bedf6e1..28612a2 100644
--- a/python/eth_contract_registry/runnable/deploy.py
+++ b/python/eth_contract_registry/runnable/deploy.py
@@ -15,7 +15,6 @@ import logging
 # external imports
 from crypto_dev_signer.eth.signer import ReferenceSigner as EIP155Signer
 from crypto_dev_signer.keystore.dict import DictKeystore
-from crypto_dev_signer.eth.helper import EthTxExecutor
 from chainlib.chain import ChainSpec
 from chainlib.eth.nonce import (
         RPCNonceOracle,
diff --git a/python/requirements.txt b/python/requirements.txt
index bd91cd5..e7cf8a3 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,3 +1,3 @@
 confini~=0.3.6rc3
-crypto-dev-signer~=0.4.14b3
-chainlib~=0.0.3a1
+crypto-dev-signer~=0.4.14b4
+chainlib~=0.0.3rc3
diff --git a/python/setup.cfg b/python/setup.cfg
index 696c230..5c9c176 100644
--- a/python/setup.cfg
+++ b/python/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = eth-contract-registry
-version = 0.5.5a2
+version = 0.5.5a3
 description = Ethereum Smart Contract key-value registry
 author = Louis Holbrook
 author_email = dev@holbrook.no