diff --git a/requirements.txt b/requirements.txt
index 3ba976b..833d467 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,5 @@ pysha3==1.0.2
 hexathon~=0.0.1a8
 websocket-client==0.57.0
 potaahto~=0.0.1a1
-chainlib==0.0.9rc1
+chainlib==0.0.10a2
 confini>=0.4.1a1,<0.5.0
diff --git a/tests/test_address.py b/tests/test_address.py
index 693f603..1c839ee 100644
--- a/tests/test_address.py
+++ b/tests/test_address.py
@@ -12,7 +12,7 @@ from tests.base import TestBase
 class TestChain(TestBase):
 
     def test_chain_spec(self):
-        checksum_address = '0xEb3907eCad74a0013c259D5874AE7f22DcBcC95C'
+        checksum_address = 'Eb3907eCad74a0013c259D5874AE7f22DcBcC95C'
         plain_address = checksum_address.lower()
 
         self.assertEqual(checksum_address, to_checksum(checksum_address))
diff --git a/tests/test_sign.py b/tests/test_sign.py
index 8175600..85d7bad 100644
--- a/tests/test_sign.py
+++ b/tests/test_sign.py
@@ -16,7 +16,10 @@ import chainlib
 from chainlib.eth.connection import EthUnixSignerConnection
 from chainlib.eth.sign import sign_transaction
 from chainlib.eth.tx import TxFactory
-from chainlib.eth.address import to_checksum_address
+from chainlib.eth.address import (
+        to_checksum_address,
+        is_same_address,
+        )
 from chainlib.jsonrpc import (
         jsonrpc_response,
         jsonrpc_error,
@@ -52,11 +55,13 @@ class Mocket(socket.socket):
         logg.debug('mocket received {}'.format(v))
         Mocket.req_id = o['id']
         params = o['params'][0]
-        if to_checksum_address(params.get('from')) != alice:
-            logg.error('from does not match alice {}'.format(params))
+        from_address = to_checksum_address(params.get('from'))
+        if not is_same_address(alice, from_address):
+            logg.error('from {} does not match alice {}'.format(from_address, alice)) #params))
             Mocket.error = True
-        if to_checksum_address(params.get('to')) != bob:
-            logg.error('to does not match bob {}'.format(params))
+        to_address = to_checksum_address(params.get('to'))
+        if not is_same_address(bob, to_address):
+            logg.error('to {} does not match bob {}'.format(to_address, bob)) #params))
             Mocket.error = True
         if not Mocket.error:
             Mocket.tx = EIP155Transaction(params, params['nonce'], params['chainId'])
diff --git a/tests/test_tx.py b/tests/test_tx.py
index f64ec80..bb86dc7 100644
--- a/tests/test_tx.py
+++ b/tests/test_tx.py
@@ -23,7 +23,10 @@ from chainlib.eth.contract import (
         ABIContractEncoder,
         ABIContractType,
         )
-from chainlib.eth.address import to_checksum_address
+from chainlib.eth.address import (
+        to_checksum_address,
+        is_same_address,
+        )
 from hexathon import (
         strip_0x,
         add_0x,
@@ -43,8 +46,8 @@ class TxTestCase(EthTesterCase):
         c = Gas(signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle, chain_spec=self.chain_spec)
         (tx_hash_hex, o) = c.create(self.accounts[0], self.accounts[1], 1024, tx_format=TxFormat.RLP_SIGNED)
         tx = unpack(bytes.fromhex(strip_0x(o)), self.chain_spec)
-        self.assertEqual(tx['from'], self.accounts[0])
-        self.assertEqual(tx['to'], self.accounts[1])
+        self.assertTrue(is_same_address(tx['from'], self.accounts[0]))
+        self.assertTrue(is_same_address(tx['to'], self.accounts[1]))
 
 
     def test_tx_pack(self):