diff --git a/pkgs/by-name/pi/piper-phonemize/package.nix b/pkgs/by-name/pi/piper-phonemize/package.nix
index 8776f98b9eb2..686071ccaa52 100644
--- a/pkgs/by-name/pi/piper-phonemize/package.nix
+++ b/pkgs/by-name/pi/piper-phonemize/package.nix
@@ -13,25 +13,6 @@
   onnxruntime,
 }:
 
-let
-  espeak-ng' = espeak-ng.overrideAttrs (oldAttrs: {
-    version = "1.52-dev";
-    src = fetchFromGitHub {
-      owner = "rhasspy";
-      repo = "espeak-ng";
-      rev = "0f65aa301e0d6bae5e172cc74197d32a6182200f";
-      hash = "sha256-2V0D3QO+v9OqffpNmwJQd3NIBd/IFeLkjaJ3Y0HHw7E=";
-    };
-
-    patches = [
-      (fetchpatch {
-        url = "https://github.com/espeak-ng/espeak-ng/commit/497c6217d696c1190c3e8b992ff7b9110eb3bedd.patch";
-        hash = "sha256-KfzqnRyQfz6nuMKnsHoUzb9rn9h/Pg54mupW1Cr+Zx0=";
-      })
-      ./espeak-mbrola.patch
-    ];
-  });
-in
 stdenv.mkDerivation (finalAttrs: {
   pname = "piper-phonemize";
   version = "2023.11.14-4";
@@ -50,18 +31,14 @@ stdenv.mkDerivation (finalAttrs: {
 
   cmakeFlags = [
     "-DONNXRUNTIME_DIR=${onnxruntime.dev}"
-    "-DESPEAK_NG_DIR=${espeak-ng'}"
+    "-DESPEAK_NG_DIR=${espeak-ng}"
   ];
 
   buildInputs = [
-    espeak-ng'
+    espeak-ng
     onnxruntime
   ];
 
-  passthru = {
-    espeak-ng = espeak-ng';
-  };
-
   meta = {
     description = "C++ library for converting text to phonemes for Piper";
     homepage = "https://github.com/rhasspy/piper-phonemize";
diff --git a/pkgs/development/python-modules/piper-phonemize/default.nix b/pkgs/development/python-modules/piper-phonemize/default.nix
index 159e39bb38f6..f3a9e40531ae 100644
--- a/pkgs/development/python-modules/piper-phonemize/default.nix
+++ b/pkgs/development/python-modules/piper-phonemize/default.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   buildPythonPackage,
+  espeak-ng,
   onnxruntime-native,
   piper-phonemize-native,
   pybind11,
@@ -18,9 +19,9 @@ buildPythonPackage {
   ];
 
   buildInputs = [
+    espeak-ng
     onnxruntime-native
     piper-phonemize-native
-    piper-phonemize-native.espeak-ng
   ];
 
   # coredump in onnxruntime::logging::Logger& onnxruntime::logging::LoggingManager::DefaultLogger()