diff --git a/bitstring-4.0.2.tar.gz b/bitstring-4.0.2.tar.gz
deleted file mode 100644
index 9e0e76923aa1de8ce6a1fda3f3f746689b73d0b4..0000000000000000000000000000000000000000
Binary files a/bitstring-4.0.2.tar.gz and /dev/null differ
diff --git a/bitstring-4.3.1.tar.gz b/bitstring-4.3.1.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..eabc7469711c764248be6e98f7d4f8bd643670ce
Binary files /dev/null and b/bitstring-4.3.1.tar.gz differ
diff --git a/python-bitstring.spec b/python-bitstring.spec
index 091af70c1e6e22a44f03f600be3572b69a3b2712..415568a96a154955b7859fd2d2b14503baec20a6 100644
--- a/python-bitstring.spec
+++ b/python-bitstring.spec
@@ -1,12 +1,12 @@
 %global _empty_manifest_terminate_build 0
 
 Name:		python-bitstring
-Version:	4.0.2
+Version:	4.3.1
 Release:	1
 Summary:	Simple construction, analysis and modification of binary data
 License:	MIT
 URL:		https://github.com/scott-griffiths/%{srcname}
-Source0:	https://files.pythonhosted.org/packages/b5/f1/f55f568ef587fe7a74f46a9ae869dbbda10575b2a404c831d2bc0567b7de/bitstring-4.0.2.tar.gz
+Source0:	https://files.pythonhosted.org/packages/source/b/bitstring/bitstring-%{version}.tar.gz
 BuildArch:	noarch
 
 %description
@@ -66,6 +66,9 @@ if [ -d example ]; then cp -arf example %{buildroot}/%{_pkgdocdir}; fi
 %{_docdir}/*
 
 %changelog
+* Wed Nov 26 2025 zhangzeyang0718 <zhangzeyang@kylinos.cn> - 4.3.1-1
+- Update to 4.3.1
+
 * Tue Jun 27 2023 niuyaru <niuyaru@kylinos.cn> - 4.0.2-1
 - Update package to version 4.0.2