diff --git a/bison-3.5.tar.xz b/bison-3.5.tar.xz
deleted file mode 100644
index 5332f69..0000000
Binary files a/bison-3.5.tar.xz and /dev/null differ
diff --git a/bison-3.6.4.tar.xz b/bison-3.6.4.tar.xz
new file mode 100644
index 0000000..aa3eba7
Binary files /dev/null and b/bison-3.6.4.tar.xz differ
diff --git a/bison.spec b/bison.spec
index c698511..16bb656 100644
--- a/bison.spec
+++ b/bison.spec
@@ -1,6 +1,6 @@
 Name:           bison
-Version:        3.5
-Release:        2
+Version:        3.6.4
+Release:        1
 Summary:        A GNU general-purpose parser generator
 License:        GPLv3+
 URL:            http://www.gnu.org/software/bison/
@@ -89,6 +89,12 @@ fi
 %{_datadir}/locale/*/LC_MESSAGES/bison-gnulib.mo
 
 %changelog
+* Thu Jul 16 2020 wangchen <wangchen137@huawei.com> 3.6.4-1
+- Type:enhancement
+- ID:NA
+- SUG:NA
+- DESC:update to 3.6.4
+
 * Sat Mar 21 2020 openEuler Buildteam <buildteam@openeuler.org> 3.5-2
 - Type:enhancement
 - ID:NA