diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3aa6b46..59170f2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -62,7 +62,9 @@ jobs:
           - "pypy-3.10"
         os: ["ubuntu-latest"]
         include:
-          - os: "macos-latest"
+          - os: "macos-latest"  # For m1 macos
+            python-version: "3.8"
+          - os: "macos-13"  # for x86 macos
             python-version: "3.8"
           - os: "windows-latest"
             python-version: "3.8"
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 0d447b5..7dc80dd 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -7,6 +7,12 @@ Changelog
 .. This document is user facing. Please word the changes in such a way
 .. that users understand how the changes affect the new version.
 
+version 0.4.2
+-----------------
++ Fix a reference counting error that happened on module initialization and
+  triggered an error in the CPython debug build.
++ Fix a setup.py error that was triggered on MacOS ARM64.
+
 version 0.4.1
 -----------------
 + Fix a bug where streams that were passed to gzip_ng_threaded.open where
diff --git a/setup.py b/setup.py
index fc336a6..7fb82b6 100644
--- a/setup.py
+++ b/setup.py
@@ -105,7 +105,8 @@ def build_zlib_ng():
     run_args = dict(cwd=build_dir, env=build_env)
     if sys.platform == "darwin":  # Cmake does not work properly
         subprocess.run([os.path.join(build_dir, "configure")], **run_args)
-        subprocess.run(["gmake", "libz-ng.a"], **run_args)
+        make_program = "gmake" if shutil.which("gmake") else "make"
+        subprocess.run([make_program, "libz-ng.a"], **run_args)
     elif sys.platform == "linux":
         subprocess.run([os.path.join(build_dir, "configure")], **run_args)
         subprocess.run(["make", "libz-ng.a", "-j", str(cpu_count)], **run_args)
@@ -123,7 +124,7 @@ def build_zlib_ng():
 
 setup(
     name="zlib-ng",
-    version="0.4.1",
+    version="0.4.2",
     description="Drop-in replacement for zlib and gzip modules using zlib-ng",
     author="Leiden University Medical Center",
     author_email="r.h.p.vorderman@lumc.nl",  # A placeholder for now
diff --git a/src/zlib_ng/__init__.py b/src/zlib_ng/__init__.py
index 53c4ac5..e696c44 100644
--- a/src/zlib_ng/__init__.py
+++ b/src/zlib_ng/__init__.py
@@ -5,4 +5,4 @@
 # This file is part of python-zlib-ng which is distributed under the
 # PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2.
 
-__version__ = "0.4.1"
+__version__ = "0.4.2"
diff --git a/src/zlib_ng/zlib_ngmodule.c b/src/zlib_ng/zlib_ngmodule.c
index 79fa29d..f6d543d 100644
--- a/src/zlib_ng/zlib_ngmodule.c
+++ b/src/zlib_ng/zlib_ngmodule.c
@@ -3061,6 +3061,7 @@ PyInit_zlib_ng(void)
     ver = PyUnicode_FromString("1.2.12");
     if (ver!= NULL) {
         PyModule_AddObject(m, "ZLIB_VERSION", ver);
+        Py_INCREF(ver);
         PyModule_AddObject(m, "ZLIB_RUNTIME_VERSION", ver);
     }