diff --git a/monotone-1.1-py2.patch b/monotone-1.1-py2.patch
deleted file mode 100644
index 15bf216..0000000
--- a/monotone-1.1-py2.patch
+++ /dev/null
@@ -1,9 +0,0 @@
-diff -up monotone-1.1/extra/mtn-hooks/monotone-ciabot.py.orig monotone-1.1/extra/mtn-hooks/monotone-ciabot.py
---- monotone-1.1/extra/mtn-hooks/monotone-ciabot.py.orig	2019-02-07 10:12:48.142739265 +0100
-+++ monotone-1.1/extra/mtn-hooks/monotone-ciabot.py	2019-02-07 10:14:58.508206736 +0100
-@@ -1,4 +1,4 @@
--#!/usr/bin/env python
-+#!/usr/bin/env python2
- #
- # Copyright (C) Nathaniel Smith <njs@pobox.com>
- #               Timothy Brownawell <tbrownaw@gmail.com>
diff --git a/monotone-1.1-py3.patch b/monotone-1.1-py3.patch
new file mode 100644
index 0000000..b8eb22e
--- /dev/null
+++ b/monotone-1.1-py3.patch
@@ -0,0 +1,23 @@
+diff -up monotone-1.1/extra/mtn-hooks/monotone-ciabot.py.orig monotone-1.1/extra/mtn-hooks/monotone-ciabot.py
+--- monotone-1.1/extra/mtn-hooks/monotone-ciabot.py.orig	2019-08-10 09:00:03.203454091 +0200
++++ monotone-1.1/extra/mtn-hooks/monotone-ciabot.py	2019-08-10 09:07:13.873700583 +0200
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ # Copyright (C) Nathaniel Smith <njs@pobox.com>
+ #               Timothy Brownawell <tbrownaw@gmail.com>
+@@ -192,10 +192,10 @@ def escape_for_xml(text, is_attrib=0):
+ 
+ def send_message(message, c):
+     if c.delivery == "debug":
+-        print message
++        print(message)
+     elif c.delivery == "xmlrpc":
+-        import xmlrpclib
+-        xmlrpclib.ServerProxy(c.xmlrpc_server).hub.deliver(message)
++        import xmlrpc.client
++        xmlrpc.client.ServerProxy(c.xmlrpc_server).hub.deliver(message)
+     elif c.delivery == "email":
+         import smtplib
+         smtp = smtplib.SMTP(c.smtp_server)
diff --git a/monotone.spec b/monotone.spec
index 1db3dac..aafa78e 100644
--- a/monotone.spec
+++ b/monotone.spec
@@ -1,6 +1,6 @@
 Name:            monotone
 Version:         1.1
-Release:         32%{?dist}
+Release:         33%{?dist}
 Summary:         A free, distributed version control system
 License:         GPLv2+
 URL:             http://monotone.ca/
@@ -17,7 +17,7 @@ Patch0:          monotone-1.0-stacktrace-on-crash.patch
 Patch1:          monotone-1.1-iostream.patch
 Patch2:          monotone-1.1-lua-integer.patch
 Patch3:          monotone-1.1-pcre.patch
-Patch4:          monotone-1.1-py2.patch
+Patch4:          monotone-1.1-py3.patch
 BuildRequires:   gcc-c++
 BuildRequires:   make
 BuildRequires:   perl-generators
@@ -197,6 +197,9 @@ exit 0
 
 
 %changelog
+* Sat Aug 10 2019 Thomas Moschny <thomas.moschny@gmx.de> - 1.1-33
+- Patch extra/mtn-hooks/monotone-ciabot.py to use Python3 (bz#1738073).
+
 * Thu Jul 25 2019 Fedora Release Engineering <releng@fedoraproject.org> - 1.1-32
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild