diff --git a/python-random2.changes b/python-random2.changes
index 10925d8..7e177f0 100644
--- a/python-random2.changes
+++ b/python-random2.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sat Apr 17 06:37:03 UTC 2021 - Christophe Giboudeaux <christophe@krop.fr>
+
+- Add patch from Debian to fix build with python 3.9:
+  * python3.9.patch
+
 -------------------------------------------------------------------
 Mon Oct 14 14:40:23 UTC 2019 - Matej Cepl <mcepl@suse.com>
 
diff --git a/python-random2.spec b/python-random2.spec
index 247271d..23e50ee 100644
--- a/python-random2.spec
+++ b/python-random2.spec
@@ -25,6 +25,8 @@ Summary:        A Session and Caching library with WSGI Middleware
 License:        Python-2.0
 URL:            https://pypi.python.org/pypi/random2
 Source:         https://files.pythonhosted.org/packages/source/r/random2/random2-%{version}.zip
+# PATCH-FIX-UPSTREAM -- python3.9.patch Origin: Debian
+Patch0:         python3.9.patch
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
@@ -45,7 +47,7 @@ makes porting code to Python 3 a lot harder, if all those tests have to be
 adjusted. This package fixes that.
 
 %prep
-%setup -q -n random2-%{version}
+%autosetup -p1 -n random2-%{version}
 
 %build
 %python_build
diff --git a/python3.9.patch b/python3.9.patch
new file mode 100644
index 0000000..ea0096c
--- /dev/null
+++ b/python3.9.patch
@@ -0,0 +1,31 @@
+Description: fix tests with python 3.9
+ Python docs for the function being tested now state:
+ "Changed in version 3.9: This method now accepts zero for k."
+ https://docs.python.org/3/library/random.html#random.getrandbits
+Author: Juhani Numminen <juhaninumminen0@gmail.com>
+Bug-Debian: https://bugs.debian.org/973085
+Last-Update: 2020-11-24
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+--- a/src/tests.py
++++ b/src/tests.py
+@@ -291,7 +291,8 @@
+         # Verify argument checking
+         self.assertRaises(TypeError, self.gen.getrandbits)
+         self.assertRaises(TypeError, self.gen.getrandbits, 1, 2)
+-        self.assertRaises(ValueError, self.gen.getrandbits, 0)
++        if sys.version_info < (3, 9):
++            self.assertRaises(ValueError, self.gen.getrandbits, 0)
+         self.assertRaises(ValueError, self.gen.getrandbits, -1)
+         self.assertRaises(TypeError, self.gen.getrandbits, 10.1)
+ 
+@@ -448,7 +449,8 @@
+         self.assertRaises(TypeError, self.gen.getrandbits)
+         self.assertRaises(TypeError, self.gen.getrandbits, 'a')
+         self.assertRaises(TypeError, self.gen.getrandbits, 1, 2)
+-        self.assertRaises(ValueError, self.gen.getrandbits, 0)
++        if sys.version_info < (3, 9):
++            self.assertRaises(ValueError, self.gen.getrandbits, 0)
+         self.assertRaises(ValueError, self.gen.getrandbits, -1)
+ 
+     def test_randbelow_logic(self, _log=log, int=int):