diff --git a/jupytext-1.17.1.tar.gz b/jupytext-1.18.1.tar.gz
similarity index 33%
rename from jupytext-1.17.1.tar.gz
rename to jupytext-1.18.1.tar.gz
index d4884655a5044e698485691a4eb0997611ca43d3..75e96e66df6d68d570737d74445a1949325d13ce 100644
Binary files a/jupytext-1.17.1.tar.gz and b/jupytext-1.18.1.tar.gz differ
diff --git a/python-jupytext.spec b/python-jupytext.spec
index 691bbce08c8c0322044b7eef75848020d3661e30..5014569e3a9652180f73a669d72606d28ad33214 100644
--- a/python-jupytext.spec
+++ b/python-jupytext.spec
@@ -1,11 +1,11 @@
 %global _empty_manifest_terminate_build 0
 Name:		python-jupytext
-Version:	1.17.1
+Version:	1.18.1
 Release:	1
 Summary:	Jupyter notebooks as Markdown documents, Julia, Python or R scripts.
 License:	MIT
 URL:		https://github.com/mwouts/jupytext
-Source0:	https://files.pythonhosted.org/packages/6e/d9/b7acd3bed66c194cec1915c5bbec30994dbb50693ec209e5b115c28ddf63/jupytext-1.17.1.tar.gz
+Source0:	%{pypi_source jupytext}
 BuildArch:	noarch
 
 BuildRequires:  python3-devel
@@ -81,6 +81,11 @@ mv %{buildroot}/doclist.lst .
 %{_docdir}/*
 
 %changelog
+* Thu Oct 23 2025 lilu <lilu@kylinos.cn> -1.18.1-1
+- Update package to version 1.18.1
+  * Fixed test test_check_source_is_newer_when_using_jupytext_sync to work reliably on systems with low filesystem timestamp resolution
+  * Use pixi to maintain the local Python environments used for developing and testing Jupytext
+
 * Fri May 23 2025 Dongxing Wang <dongxing.wang_a@thundersoft.com> - 1.17.1-1
 - Update package to version 1.17.1
   Renaming files other than notebooks will not load their content