diff --git a/pkgs/development/python-modules/random2/default.nix b/pkgs/development/python-modules/random2/default.nix
index 6845a5707da7..cb84d32ef414 100644
--- a/pkgs/development/python-modules/random2/default.nix
+++ b/pkgs/development/python-modules/random2/default.nix
@@ -2,6 +2,7 @@
 , buildPythonPackage
 , fetchPypi
 , isPyPy
+, fetchpatch
 }:
 
 buildPythonPackage rec {
@@ -15,6 +16,14 @@ buildPythonPackage rec {
     sha256 = "34ad30aac341039872401595df9ab2c9dc36d0b7c077db1cea9ade430ed1c007";
   };
 
+  patches = [
+    # Patch test suite for python >= 3.9
+    (fetchpatch {
+      url = "https://github.com/strichter/random2/pull/3/commits/1bac6355d9c65de847cc445d782c466778b94fbd.patch";
+      sha256 = "064137pg1ilv3f9r10123lqbqz45070jca8pjjyp6gpfd0yk74pi";
+    })
+  ];
+
   meta = with lib; {
     homepage = "http://pypi.python.org/pypi/random2";
     description = "Python 3 compatible Python 2 `random` Module";