diff --git a/drop-march-native.patch b/drop-march-native.patch
new file mode 100644
index 0000000..b66038a
--- /dev/null
+++ b/drop-march-native.patch
@@ -0,0 +1,23 @@
+From e7ec8ea718e73a8fee7dbc007c262e1584f7f94b Mon Sep 17 00:00:00 2001
+From: Andrew Resch <andrewresch@gmail.com>
+Date: Sun, 22 Jun 2025 09:50:26 -0700
+Subject: [PATCH] Change default COMPILE_ARGS to just '-O3'
+
+---
+ build.py | 3 ---
+ 1 file changed, 3 deletions(-)
+
+Index: rencode-1.0.8/build.py
+===================================================================
+--- rencode-1.0.8.orig/build.py
++++ rencode-1.0.8/build.py
+@@ -11,7 +11,8 @@ from setuptools import Extension
+ from setuptools.command.build_ext import build_ext
+ 
+ 
+-COMPILE_ARGS = ["-march=native", "-O3", "-msse", "-msse2", "-mfma", "-mfpmath=sse"]
++COMPILE_ARGS = ["-O3"]
++
+ LINK_ARGS: list[str] = []
+ INCLUDE_DIRS: list[str] = []
+ LIBRARIES: list[str] = []
diff --git a/python-rencode.changes b/python-rencode.changes
index 8291fee..2a8e7d2 100644
--- a/python-rencode.changes
+++ b/python-rencode.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Jul 24 00:34:03 UTC 2025 - Steve Kowalik <steven.kowalik@suse.com>
+
+- Add patch drop-march-native.patch:
+  * Do not use CPU-specific build flags. (bsc#1246916)
+
 -------------------------------------------------------------------
 Tue Jul 22 03:56:14 UTC 2025 - Steve Kowalik <steven.kowalik@suse.com>
 
diff --git a/python-rencode.spec b/python-rencode.spec
index ad11200..33f9694 100644
--- a/python-rencode.spec
+++ b/python-rencode.spec
@@ -24,6 +24,8 @@ License:        GPL-3.0-or-later
 URL:            https://github.com/aresch/rencode
 Source0:        https://github.com/aresch/rencode/archive/v%{version}.tar.gz
 Source1:        %{name}.changes
+# PATCH-FIX-UPSTREAM Based on gh#aresch/rencode#e7ec8ea718e73a8fee7dbc007c262e1584f7f94b
+Patch0:         drop-march-native.patch
 BuildRequires:  %{python_module Cython}
 BuildRequires:  %{python_module devel}
 BuildRequires:  %{python_module pip}
@@ -40,7 +42,7 @@ many small elements, r-encodings take up significantly less space than
 b-encodings. Python2 version of package
 
 %prep
-%setup -q -n rencode-%{version}
+%autosetup -p1 -n rencode-%{version}
 
 %build
 export CFLAGS="%{optflags} -fno-strict-aliasing"