diff --git a/docs/changelog.rst b/docs/changelog.rst
index ddf20b9..b0c850d 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -8,8 +8,15 @@
    should not occur with Python 3.7.
 
 
-Version 1.8.1 (in development)
-==============================
+Version 1.8.2 (09 Aug 2018)
+===========================
+
+* require aiorpcX 0.7.1 which along with an ElectrumX change restores clean
+  shutdown and flush functionality, particularly during initial sync
+* fix `#564`_
+
+Version 1.8.1 (08 Aug 2018)
+===========================
 
 * require aiorpcX 0.7.0 which fixes a bug causing silent shutdown of ElectrumX
 * fix `#557`_, `#559`_
@@ -206,3 +213,4 @@ bitcoincash:qzxpdlt8ehu9ehftw6rqsy2jgfq4nsltxvhrdmdfpn
 .. _#538: https://github.com/kyuupichan/electrumx/issues/538
 .. _#557: https://github.com/kyuupichan/electrumx/issues/557
 .. _#559: https://github.com/kyuupichan/electrumx/issues/559
+.. _#564: https://github.com/kyuupichan/electrumx/issues/564
diff --git a/docs/conf.py b/docs/conf.py
index 89e86bd..33afff8 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -15,7 +15,7 @@
 import os
 import sys
 sys.path.insert(0, os.path.abspath('..'))
-VERSION="ElectrumX 1.8.1"
+VERSION="ElectrumX 1.8.2"
 
 # -- Project information -----------------------------------------------------
 
diff --git a/electrumx/__init__.py b/electrumx/__init__.py
index 50d4b31..d42dc60 100644
--- a/electrumx/__init__.py
+++ b/electrumx/__init__.py
@@ -1,4 +1,4 @@
-version = 'ElectrumX 1.8.2-dev'
+version = 'ElectrumX 1.8.3-dev'
 version_short = version.split()[-1]
 
 from electrumx.server.controller import Controller
diff --git a/electrumx/server/block_processor.py b/electrumx/server/block_processor.py
index b7d0f6f..97f93a0 100644
--- a/electrumx/server/block_processor.py
+++ b/electrumx/server/block_processor.py
@@ -184,8 +184,10 @@ class BlockProcessor(electrumx.server.db.DB):
         # completes the data will be flushed and then we shut down.
         # Take the state lock to be certain in-memory state is
         # consistent and not being updated elsewhere.
-        async with self.state_lock:
-            return await asyncio.shield(run_in_thread(func, *args))
+        async def run_in_thread_locked():
+            async with self.state_lock:
+                return await run_in_thread(func, *args)
+        return await asyncio.shield(run_in_thread_locked())
 
     async def _maybe_flush(self):
         # If caught up, flush everything as client queries are
diff --git a/electrumx/server/controller.py b/electrumx/server/controller.py
index a43ee95..e3115c6 100644
--- a/electrumx/server/controller.py
+++ b/electrumx/server/controller.py
@@ -80,8 +80,8 @@ class Controller(ServerBase):
         '''Start the RPC server and wait for the mempool to synchronize.  Then
         start serving external clients.
         '''
-        if not (0, 7) <= aiorpcx_version < (0, 8):
-            raise RuntimeError('aiorpcX version 0.7.x required')
+        if not (0, 7, 1) <= aiorpcx_version < (0, 8):
+            raise RuntimeError('aiorpcX version 0.7.x required with x >= 1')
 
         env = self.env
         min_str, max_str = env.coin.SESSIONCLS.protocol_min_max_strings()
diff --git a/setup.py b/setup.py
index e48f82f..bc41701 100644
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,5 @@
 import setuptools
-version = '1.8.1'
+version = '1.8.2'
 
 setuptools.setup(
     name='electrumX',
@@ -12,7 +12,7 @@ setuptools.setup(
     # "blake256" package is required to sync Decred network.
     # "xevan_hash" package is required to sync Xuez network.
     # "groestlcoin_hash" package is required to sync Groestlcoin network.
-    install_requires=['aiorpcX>=0.7,<0.8', 'attrs',
+    install_requires=['aiorpcX>=0.7.1,<0.8', 'attrs',
                       'plyvel', 'pylru', 'aiohttp >= 2'],
     packages=setuptools.find_packages(include=('electrumx*',)),
     description='ElectrumX Server',