diff --git a/bfloat16.cc b/bfloat16.cc
index 6b20eb2b7..bd766e5fe 100644
--- a/bfloat16.cc
+++ b/bfloat16.cc
@@ -26,6 +26,7 @@ limitations under the License.
 
 #include <Python.h>
 #include <cinttypes>
+#include <patchlevel.h>
 #include <vector>
 #ifdef DEBUG_CALLS
 #include <iostream>
@@ -1745,7 +1746,13 @@ namespace greenwaves
 		NPyBfloat16_ArrFuncs.argmax = NPyBfloat16_ArgMaxFunc;
 		NPyBfloat16_ArrFuncs.argmin = NPyBfloat16_ArgMinFunc;
 
+		// Py_TYPE has been deprecated since Python 3.9
+		#if PY_MINOR_VERSION < 9
 		Py_TYPE(&NPyBfloat16_Descr) = &PyArrayDescr_Type;
+		#else
+		Py_SET_TYPE(&NPyBfloat16_Descr, &PyArrayDescr_Type);
+		#endif
+
 		npy_bfloat16 = PyArray_RegisterDataType(&NPyBfloat16_Descr);
 		bfloat16_type_ptr = &bfloat16_type;
 		if (npy_bfloat16 < 0)
diff --git a/setup.py b/setup.py
index e234d4fec..1255b9954 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,8 @@ def build_extensions(self):
 
 module1 = Extension(PACKAGE_NAME,
                     sources=['bfloat16.cc'],
-                    include_dirs=[np.get_include()])
+                    include_dirs=[np.get_include()],
+                    extra_compile_args=['-std=c++11'])
 
 setup(name=PACKAGE_NAME,
       version='1.1',