diff --git a/eth_stat_syncer/runnable/tracker.py b/eth_stat_syncer/runnable/tracker.py
index 1c64ead..09764c9 100644
--- a/eth_stat_syncer/runnable/tracker.py
+++ b/eth_stat_syncer/runnable/tracker.py
@@ -7,15 +7,22 @@ import argparse
 # external imports
 import confini
 from chainsyncer.backend.memory import MemBackend
-from chainsyncer.driver import (
-        HeadSyncer,
-        HistorySyncer,
-        )
+from chainsyncer.driver.head import HeadSyncer
+from chainsyncer.driver.history import HistorySyncer
 from chainsyncer.filter import SyncFilter
 from chainsyncer.error import NoBlockForYou
 from chainlib.chain import ChainSpec
 from chainlib.eth.connection import EthHTTPConnection
-from chainlib.eth.block import block_latest
+from chainlib.interface import ChainInterface
+from chainlib.eth.block import (
+        block_by_number,
+        Block,
+        block_latest,
+        )
+from chainlib.eth.tx import (
+        receipt,
+        Tx,
+        )
 
 # local imports
 from eth_stat_syncer.store import (
@@ -70,6 +77,15 @@ class GasPriceFilter(SyncFilter):
         self.gas_aggregator.put(tx.gas_price)
 
 
+class EthChainInterface(ChainInterface):
+
+    def __init__(self):
+        self._block_by_number = block_by_number
+        self._block_from_src = Block.from_src
+        self._tx_receipt = receipt
+        self._src_normalize = Tx.src_normalize
+
+
 def main():
     gas_store = RunStore(basedir=config.get('STORE_BASE_DIR'))
     gas_aggregator = GasAggregator(gas_store, 360)
@@ -81,11 +97,12 @@ def main():
     start_block =  n
     logg.info('block height at start {}'.format(start_block))
 
+    chain_interface = EthChainInterface()
     if config.get('_START') != None:
         offset = start_block - config.get('_START')
-        syncer_backend = MemBackend(chain_spec, None, target_block=start_block)
+        syncer_backend = MemBackend.custom(chain_spec, start_block)
         syncer_backend.set(offset, 0)
-        syncer = HistorySyncer(syncer_backend, block_callback=gas_aggregator.block_callback)
+        syncer = HistorySyncer(syncer_backend, chain_interface, block_callback=gas_aggregator.block_callback)
         syncer.add_filter(gas_filter)
         try:
             syncer.loop(0.0, conn)
@@ -94,7 +111,7 @@ def main():
 
     syncer_backend = MemBackend(chain_spec, None)
     syncer_backend.set(start_block + 1, 0)
-    syncer = HeadSyncer(syncer_backend, block_callback=gas_aggregator.block_callback)
+    syncer = HeadSyncer(syncer_backend, chain_interface, block_callback=gas_aggregator.block_callback)
     syncer.add_filter(gas_filter)
     syncer.loop(1.0, conn)
 
diff --git a/requirements.txt b/requirements.txt
index c22b305..9a96cc9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-chainsyncer~=0.0.2a3
-chainlib~=0.0.3a1
-jsonrpc_std~=0.0.1a2
+chainsyncer~=0.2.0
+chainlib-eth>=0.1.0b1,<=0.1.0
+jsonrpc_std~=0.1.0