diff --git a/pkgs/applications/office/libreoffice/default.nix b/pkgs/applications/office/libreoffice/default.nix
index b6dd98d4cae1..1a0eaeeeb544 100644
--- a/pkgs/applications/office/libreoffice/default.nix
+++ b/pkgs/applications/office/libreoffice/default.nix
@@ -562,6 +562,7 @@ in stdenv.mkDerivation (finalAttrs: {
   passthru = {
     inherit srcs;
     jdk = jre';
+    python = python311; # for unoconv
     updateScript = [
       ./update.sh
       # Pass it this file name as argument
diff --git a/pkgs/tools/text/unoconv/default.nix b/pkgs/tools/text/unoconv/default.nix
index 66f8fd2a6509..490b961f9710 100644
--- a/pkgs/tools/text/unoconv/default.nix
+++ b/pkgs/tools/text/unoconv/default.nix
@@ -1,11 +1,8 @@
-{ lib, stdenv, fetchFromGitHub, python3, libreoffice-unwrapped, asciidoc, makeWrapper
+{ lib, stdenv, fetchFromGitHub, libreoffice-unwrapped, asciidoc, makeWrapper
 # whether to install odt2pdf/odt2doc/... symlinks to unoconv
 , installSymlinks ? true
 }:
 
-# IMPORTANT: unoconv must use the same python version as libreoffice (unless it
-# will not be able to load the pyuno module from libreoffice).
-
 stdenv.mkDerivation rec {
   pname = "unoconv";
   version = "0.9.0";
@@ -24,7 +21,7 @@ stdenv.mkDerivation rec {
   '';
 
   postInstall = ''
-    sed -i "s|/usr/bin/env python.*|${python3}/bin/${python3.executable}|" "$out/bin/unoconv"
+    sed -i "s|/usr/bin/env python.*|${libreoffice-unwrapped.python.interpreter}|" "$out/bin/unoconv"
     wrapProgram "$out/bin/unoconv" \
         --set-default UNO_PATH "${libreoffice-unwrapped}/lib/libreoffice/program/"
   '' + lib.optionalString installSymlinks ''