diff --git a/pkgs/data/misc/libkkc-data/default.nix b/pkgs/data/misc/libkkc-data/default.nix
index 7fcd2fbf516f..516dd61c60f3 100644
--- a/pkgs/data/misc/libkkc-data/default.nix
+++ b/pkgs/data/misc/libkkc-data/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, python2, libkkc }:
+{ lib, stdenv, fetchurl, fetchpatch, python3, libkkc }:
 
 stdenv.mkDerivation rec {
   pname = "libkkc-data";
@@ -9,7 +9,16 @@ stdenv.mkDerivation rec {
     sha256 = "16avb50jasq2f1n9xyziky39dhlnlad0991pisk3s11hl1aqfrwy";
   };
 
-  nativeBuildInputs = [ python2.pkgs.marisa ];
+  patches = [
+    (fetchpatch {
+      name = "build-python3.patch";
+      url = "https://github.com/ueno/libkkc/commit/ba1c1bd3eb86d887fc3689c3142732658071b5f7.patch";
+      relative = "data/templates/libkkc-data";
+      hash = "sha256-q4zUclJtDQ1E5v2PW00zRZz6GXllLUcp2h3tugufrRU=";
+    })
+  ];
+
+  nativeBuildInputs = [ python3.pkgs.marisa ];
 
   strictDeps = true;