diff --git a/EDMarketConnector.manifest b/EDMarketConnector.manifest
index b6bc6966..2985bbfa 100644
--- a/EDMarketConnector.manifest
+++ b/EDMarketConnector.manifest
@@ -7,20 +7,21 @@
 			</requestedPrivileges>
 		</security>
 	</trustInfo>
+	<!-- https://docs.microsoft.com/en-us/windows/win32/sysinfo/targeting-your-application-at-windows-8-1 -->
+	<compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+		<application>
+			<supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>	<!-- Windows 10 -->
+			<supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>	<!-- Windows 8.1 -->
+			<supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>	<!-- Windows 8 -->
+			<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>	<!-- Windows 7 -->
+		</application>
+	</compatibility>
 	<asmv3:application>
 		<asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
 			<dpiAware>true</dpiAware>
 		</asmv3:windowsSettings>
 	</asmv3:application>
 	<dependency>
-		<dependentAssembly>
-			<assemblyIdentity
-				type='win32'
-				name='Microsoft.VC90.CRT'
-				version='9.0.21022.8'
-				processorArchitecture='*'
-				publicKeyToken='1fc8b3b9a1e18e3b' />
-		</dependentAssembly>
 	</dependency>
 	<dependency>
 		<dependentAssembly>
diff --git a/EDMarketConnector.wxs b/EDMarketConnector.wxs
index 50890764..5814b914 100644
--- a/EDMarketConnector.wxs
+++ b/EDMarketConnector.wxs
@@ -167,8 +167,8 @@
 					<Component Guid="{A18814B6-B491-42AB-A433-2AD66A823AD7}">
 						<File KeyPath="yes" Source="SourceDir\library.zip" />
 					</Component>
-					<Component Id="libssl_1_1.dll" Guid="*">
-						<File Id="libssl_1_1.dll" KeyPath="yes" Source="SourceDir\libssl-1_1.dll" />
+					<Component Guid="*">
+						<File KeyPath="yes" Source="SourceDir\libssl-1_1.dll" />
 					</Component>
 					<Component Guid="*">
 						<File KeyPath="yes" Source="SourceDir\modules.p" />
diff --git a/README.md b/README.md
index d2377343..86224c75 100644
--- a/README.md
+++ b/README.md
@@ -326,7 +326,7 @@ Mac:
 
 Windows:
 
-* requires py2exe 0.9.3.2
+* requires py2exe 0.9.3.2 (currently unreleased - build from [source](https://github.com/albertosottile/py2exe))
 * winsparkle.dll & .pdb from [WinSparkle](https://github.com/vslavik/winsparkle) copied to the current directory
 * [WiX Toolset](http://wixtoolset.org/)
 * Run `setup.py py2exe`
diff --git a/setup.py b/setup.py
index 6df7975d..c26dbb8b 100755
--- a/setup.py
+++ b/setup.py
@@ -66,7 +66,15 @@ if sys.platform=='darwin':
     OPTIONS =  { 'py2app':
                  {'dist_dir': dist_dir,
                   'optimize': 2,
-                  'packages': [ 'requests', 'keyring.backends' ],
+                  'packages': [
+                      'requests',
+                      'keyring.backends',
+                      'sqlite3',	# Included for plugins
+                  ],
+                  'includes': [
+                      'shutil',         # Included for plugins
+                      'zipfile',        # Included for plugins
+                  ],
                   'frameworks': [ 'Sparkle.framework' ],
                   'excludes': [ 'distutils', '_markerlib', 'PIL', 'pkg_resources', 'simplejson', 'unittest' ],
                   'iconfile': '%s.icns' % APPNAME,
diff --git a/update.py b/update.py
index 968de1fc..2844fc70 100644
--- a/update.py
+++ b/update.py
@@ -3,6 +3,7 @@ from os.path import dirname, join
 import sys
 from time import time
 import threading
+from traceback import print_exc
 
 # ensure registry is set up on Windows before we start
 from config import appname, appversion, update_feed, update_interval, config
@@ -50,10 +51,11 @@ elif sys.platform=='darwin':
 
         def __init__(self, master):
             try:
-                objc.loadBundle('Sparkle', globals(), join(dirname(sys.executable.decode(sys.getfilesystemencoding())), os.pardir, 'Frameworks', 'Sparkle.framework'))
+                objc.loadBundle('Sparkle', globals(), join(dirname(sys.executable), os.pardir, 'Frameworks', 'Sparkle.framework'))
                 self.updater = SUUpdater.sharedUpdater()
             except:
                 # can't load framework - not frozen or not included in app bundle?
+                print_exc()
                 self.updater = None
 
         def checkForUpdates(self):
@@ -82,7 +84,7 @@ elif sys.platform=='win32':
             try:
                 sys.frozen	# don't want to try updating python.exe
                 self.updater = ctypes.cdll.WinSparkle
-                self.updater.win_sparkle_set_appcast_url(update_feed)	# py2exe won't let us embed this in resources
+                self.updater.win_sparkle_set_appcast_url(update_feed.encode())	# py2exe won't let us embed this in resources
 
                 # set up shutdown callback
                 global root
@@ -90,11 +92,9 @@ elif sys.platform=='win32':
                 self.callback_t = ctypes.CFUNCTYPE(None)	# keep reference
                 self.callback_fn = self.callback_t(shutdown_request)
                 self.updater.win_sparkle_set_shutdown_request_callback(self.callback_fn)
-
                 self.updater.win_sparkle_init()
 
             except:
-                from traceback import print_exc
                 print_exc()
                 self.updater = None