diff --git a/cython3.patch b/cython3.patch
new file mode 100644
index 0000000..b4fefda
--- /dev/null
+++ b/cython3.patch
@@ -0,0 +1,56 @@
+From 31f782aed3de56300886dd7350f1faff657e14dd Mon Sep 17 00:00:00 2001
+From: Spencer Clark <spencerkclark@gmail.com>
+Date: Sat, 29 Jul 2023 09:51:10 -0400
+Subject: [PATCH] Set c_api_binop_methods compiler directive to True
+
+This retains Cython 0.x behavior for arithmetic operators for
+Cython >= 3.0.0.
+---
+ Changelog            | 2 ++
+ pyproject.toml       | 2 +-
+ requirements-dev.txt | 2 +-
+ setup.py             | 9 ++++++++-
+ 4 files changed, 12 insertions(+), 3 deletions(-)
+
+Index: cftime-1.6.2/pyproject.toml
+===================================================================
+--- cftime-1.6.2.orig/pyproject.toml
++++ cftime-1.6.2/pyproject.toml
+@@ -1,3 +1,3 @@
+ [build-system]
+-requires = ["setuptools>=41.2", "cython", "wheel", "oldest-supported-numpy"]
++requires = ["setuptools>=41.2", "cython>=0.29.20", "wheel", "oldest-supported-numpy"]
+ build-backend = "setuptools.build_meta"
+Index: cftime-1.6.2/requirements-dev.txt
+===================================================================
+--- cftime-1.6.2.orig/requirements-dev.txt
++++ cftime-1.6.2/requirements-dev.txt
+@@ -1,7 +1,7 @@
+ check-manifest
+ coverage
+ coveralls
+-cython>0.26.1
++cython>=0.29.20
+ pytest
+ pytest-cov
+ sphinx
+Index: cftime-1.6.2/setup.py
+===================================================================
+--- cftime-1.6.2.orig/setup.py
++++ cftime-1.6.2/setup.py
+@@ -16,7 +16,14 @@ except ImportError:
+ BASEDIR = os.path.abspath(os.path.dirname(__file__))
+ SRCDIR = os.path.join(BASEDIR,'src')
+ CMDS_NOCYTHONIZE = ['clean','clean_cython','sdist']
+-COMPILER_DIRECTIVES = {}
++COMPILER_DIRECTIVES = {
++    # Cython 3.0.0 changes the default of the c_api_binop_methods directive to
++    # False, resulting in errors in datetime and timedelta arithmetic:
++    # https://github.com/Unidata/cftime/issues/271.  We explicitly set it to
++    # True to retain Cython 0.x behavior for future Cython versions.  This
++    # directive was added in Cython version 0.29.20.
++    "c_api_binop_methods": True
++}
+ DEFINE_MACROS = [("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION")] 
+ FLAG_COVERAGE = '--cython-coverage'  # custom flag enabling Cython line tracing
+ NAME = 'cftime'
diff --git a/python-cftime.changes b/python-cftime.changes
index 285fa3e..a76cc92 100644
--- a/python-cftime.changes
+++ b/python-cftime.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Aug 30 11:03:06 UTC 2023 - Markéta Machová <mmachova@suse.com>
+
+- add upstream cython3.patch
+
 -------------------------------------------------------------------
 Thu Oct 27 22:15:54 UTC 2022 - Yogalakshmi Arunachalam <yarunachalam@suse.com>
 
diff --git a/python-cftime.spec b/python-cftime.spec
index 6c6aec1..60ffca8 100644
--- a/python-cftime.spec
+++ b/python-cftime.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-cftime
 #
-# Copyright (c) 2022 SUSE LLC
+# Copyright (c) 2023 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -17,8 +17,6 @@
 
 
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
-# no numpy for Python 3.6
-%define skip_python36 1
 Name:           python-cftime
 Version:        1.6.2
 Release:        0
@@ -26,14 +24,16 @@ Summary:        Time-handling functionality from netcdf4-python
 License:        MIT
 URL:            https://github.com/Unidata/cftime
 Source:         https://files.pythonhosted.org/packages/source/c/cftime/cftime-%{version}.tar.gz
-BuildRequires:  %{python_module Cython}
+#PATCH-FIX-UPSTREAM https://github.com/Unidata/cftime/pull/305 Set c_api_binop_methods Cython compiler directive to True
+Patch:          cython3.patch
+BuildRequires:  %{python_module Cython >= 0.29.20}
 BuildRequires:  %{python_module numpy-devel}
 BuildRequires:  %{python_module numpy}
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module setuptools >= 18.0}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
-Requires:       python-Cython
+Requires:       python-Cython >= 0.29.20
 Requires:       python-numpy
 %python_subpackages
 
@@ -42,7 +42,7 @@ Time-handling functionality from netcdf4-python.
 Was split out from netcfd4-python in 2016.
 
 %prep
-%setup -q -n cftime-%{version}
+%autosetup -p1 -n cftime-%{version}
 # do not require cov/xdist/etc
 rm setup.cfg