diff --git a/pkgs/development/python-modules/smart-open/default.nix b/pkgs/development/python-modules/smart-open/default.nix
index b9622276bdf8..470de7e118e0 100644
--- a/pkgs/development/python-modules/smart-open/default.nix
+++ b/pkgs/development/python-modules/smart-open/default.nix
@@ -2,6 +2,7 @@
 , buildPythonPackage
 , pythonOlder
 , fetchFromGitHub
+, fetchpatch
 , azure-common
 , azure-core
 , azure-storage-blob
@@ -31,6 +32,16 @@ buildPythonPackage rec {
     hash = "sha256-4HOTaF6AKXGlVCvSGKnnaH73aa4IO0aRxz03XQ4gSd8=";
   };
 
+  patches = [
+    # https://github.com/RaRe-Technologies/smart_open/pull/822
+    # fix test_smart_open.py on python 3.12
+    (fetchpatch {
+      name = "fix-smart-open-test.patch";
+      url = "https://github.com/RaRe-Technologies/smart_open/commit/3d29564ca034a56d343c9d14b178aaa0ff4c937c.patch";
+      hash = "sha256-CrAeqaIMM8bctWiFnq9uamnIlkaslDyjaWL6k9wUjT8=";
+    })
+  ];
+
   build-system = [
     setuptools
   ];