diff --git a/boltons-pr271-py39-frozendict.patch b/boltons-pr271-py39-frozendict.patch
new file mode 100644
index 0000000..13eaabf
--- /dev/null
+++ b/boltons-pr271-py39-frozendict.patch
@@ -0,0 +1,62 @@
+From d9c2af2319339924092f7e503c9ebb6079956006 Mon Sep 17 00:00:00 2001
+From: Karthikeyan Singaravelan <tir.karthi@gmail.com>
+Date: Wed, 18 Nov 2020 13:12:49 +0000
+Subject: [PATCH] Fix Python 3.9 compatibility for FrozenDict due to PEP 584
+ implementation.
+
+---
+ boltons/dictutils.py    |  2 +-
+ tests/test_dictutils.py | 12 ++++++++++++
+ 2 files changed, 13 insertions(+), 1 deletion(-)
+
+diff --git a/boltons/dictutils.py b/boltons/dictutils.py
+index ce5884c..8d1a4e7 100644
+--- a/boltons/dictutils.py
++++ b/boltons/dictutils.py
+@@ -1076,7 +1076,7 @@ def _raise_frozen_typeerror(self, *a, **kw):
+         "raises a TypeError, because FrozenDicts are immutable"
+         raise TypeError('%s object is immutable' % self.__class__.__name__)
+ 
+-    __setitem__ = __delitem__ = update = _raise_frozen_typeerror
++    __ior__ = __setitem__ = __delitem__ = update = _raise_frozen_typeerror
+     setdefault = pop = popitem = clear = _raise_frozen_typeerror
+ 
+     del _raise_frozen_typeerror
+diff --git a/tests/test_dictutils.py b/tests/test_dictutils.py
+index b6873a8..6eac812 100644
+--- a/tests/test_dictutils.py
++++ b/tests/test_dictutils.py
+@@ -1,5 +1,6 @@
+ # -*- coding: utf-8 -*-
+ 
++import sys
+ import pytest
+ 
+ from boltons.dictutils import OMD, OneToOne, ManyToMany, FrozenDict, subdict, FrozenHashError
+@@ -432,6 +433,15 @@ def test_frozendict():
+     return
+ 
+ 
++@pytest.mark.skipif(sys.version_info < (3, 9), reason="requires python3.9 or higher")
++def test_frozendict_ior():
++    data = {'a': 'A', 'b': 'B'}
++    fd = FrozenDict(data)
++
++    with pytest.raises(TypeError, match=".*FrozenDict.*immutable.*"):
++        fd |= fd
++
++
+ def test_frozendict_api():
+     # all the read-only methods that are fine
+     through_methods = ['__class__',
+@@ -452,8 +462,10 @@ def test_frozendict_api():
+                        '__lt__',
+                        '__ne__',
+                        '__new__',
++                       '__or__',
+                        '__reduce__',
+                        '__reversed__',
++                       '__ror__',
+                        '__setattr__',
+                        '__sizeof__',
+                        '__str__',
diff --git a/python-boltons.changes b/python-boltons.changes
index 4aa9002..4dfc7b0 100644
--- a/python-boltons.changes
+++ b/python-boltons.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Fri Mar 19 19:53:55 UTC 2021 - Ben Greiner <code@bnavigator.de>
+
+- Add boltons-pr271-py39-frozendict.patch
+  * gh#mahmoud/boltons#271
+  * gh#mahmoud/boltons#283
+
 -------------------------------------------------------------------
 Sat Jan 30 07:06:02 UTC 2021 - John Vandenberg <jayvdb@gmail.com>
 
diff --git a/python-boltons.spec b/python-boltons.spec
index d77904e..fe762de 100644
--- a/python-boltons.spec
+++ b/python-boltons.spec
@@ -25,6 +25,8 @@ License:        BSD-3-Clause
 Group:          Development/Languages/Python
 URL:            https://github.com/mahmoud/boltons
 Source:         https://github.com/mahmoud/boltons/archive/%{version}.tar.gz#/boltons-%{version}.tar.gz
+# PATCH-FIX-UPSTREAM boltons-pr271-py39-frozendict.patch -- gh#mahmoud/boltons#271, gh#mahmoud/boltons#283
+Patch0:         boltons-pr271-py39-frozendict.patch
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
@@ -38,7 +40,7 @@ that can be used as a package or independently. Documentation is on
 http://boltons.readthedocs.org.
 
 %prep
-%setup -q -n boltons-%{version}
+%autosetup -p1 -n boltons-%{version}
 
 %build
 %python_build
@@ -53,6 +55,7 @@ http://boltons.readthedocs.org.
 %files %{python_files}
 %license LICENSE
 %doc README.md CHANGELOG.md docs/*.rst
-%{python_sitelib}/*
+%{python_sitelib}/boltons
+%{python_sitelib}/boltons-%{version}*-info
 
 %changelog