diff --git a/pyproject.toml b/pyproject.toml
index ed4d599..fb4cfe1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,10 +1,10 @@
 [build-system]
 requires = [
     "setuptools>=61.2",
-    "Cython>=0.29.22,<3.0",
+
+    # see https://github.com/yt-project/ewah_bool_utils/issues/52
+    "Cython>=3.0, <3.1",
     "oldest-supported-numpy",
-    # see https://github.com/numpy/numpy/pull/18389
-    "wheel>=0.36.2",
 ]
 
 [project]
diff --git a/setup.py b/setup.py
index 535b2be..74a5c4f 100644
--- a/setup.py
+++ b/setup.py
@@ -16,16 +16,20 @@
 else:
     std_libs = ["m"]
 
+define_macros = [("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION")]
+
 extensions = [
     Extension(
         "ewah_bool_utils.ewah_bool_wrap",
         ["ewah_bool_utils/ewah_bool_wrap.pyx"],
+        define_macros=define_macros,
         include_dirs=["ewah_bool_utils", "ewah_bool_utils/cpp", np.get_include()],
         language="c++",
     ),
     Extension(
         "ewah_bool_utils.morton_utils",
         ["ewah_bool_utils/morton_utils.pyx"],
+        define_macros=define_macros,
         extra_compile_args=omp_args,
         extra_link_args=omp_args,
         libraries=std_libs,
@@ -35,6 +39,7 @@
         "ewah_bool_utils._testing",
         ["ewah_bool_utils/_testing.pyx"],
         include_dirs=["ewah_bool_utils", "ewah_bool_utils/cpp", np.get_include()],
+        define_macros=define_macros,
         extra_compile_args=["-O3"],
         language="c++",
     ),
@@ -44,8 +49,6 @@
 setup(
     ext_modules=cythonize(
         extensions,
-        compiler_directives={
-            "language_level": 3  # this option can be removed when Cython >= 3.0 is required
-        },
+        compiler_directives={"language_level": 3},
     ),
 )