diff --git a/Cython.spec b/Cython.spec
index ee6ceb1fff92ae2a1be9eddea1d55c6e99ebb340..b653f41478490bd824198ded9fbcd7c125e8db05 100644
--- a/Cython.spec
+++ b/Cython.spec
@@ -2,7 +2,7 @@
 %bcond_with test
 
 Name:           Cython
-Version:        3.1.2
+Version:        3.1.3
 Release:        1
 Summary:        Language for writing C extensions for Python
 License:        Apache 2.0
@@ -66,6 +66,14 @@ rm -rf %{buildroot}%{python3_sitelib}/setuptools/tests
 
 
 %changelog
+* Thu Aug 14 2025 Ge Wang <wang__ge@126.com> - 3.1.3-1
+- Update package to version 3.1.3
+  * Some method calls with 0 or 1 argument failed to use ``PyObject_VectorCallMethod()``
+  * Walrus assignments of literal Python integers could generate invalid C code
+  * C string arrays (not pointers) always coerced to the Python default string type,even on explicit casts to other string types
+  * An internal C function was not marked as ``static`` and leaked a linker symbol
+  * Some Unicode letters were not recognised as lexically valid name parts
+
 * Mon Jul 28 2025 wangkai <13474090681@163.com> - 3.1.2-1
 - update to version 3.1.2
 
diff --git a/cython-3.1.2.tar.gz b/cython-3.1.3.tar.gz
similarity index 31%
rename from cython-3.1.2.tar.gz
rename to cython-3.1.3.tar.gz
index 0248288b94fb12ad11793fcb5df9289daa9c8212..51ecdca230a8556a0ea573d4bf301e909703b0dc 100644
Binary files a/cython-3.1.2.tar.gz and b/cython-3.1.3.tar.gz differ