diff --git a/bison-3.5.tar.xz b/bison-3.5.tar.xz
deleted file mode 100644
index 5332f6942d616e088410acdbab5067b900dde514..0000000000000000000000000000000000000000
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 0000000000000000000000000000000000000000..aa3eba7414f485cffaa64cd7ae8dc973b0575569
Binary files /dev/null and b/bison-3.6.4.tar.xz differ
diff --git a/bison.spec b/bison.spec
index c69851112cd6ee43feae762468cda6705e3c4633..629191b152681aa8648e5c23c30ef3735ea54f5d 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 +89,9 @@ fi
 %{_datadir}/locale/*/LC_MESSAGES/bison-gnulib.mo
 
 %changelog
+* Thu Aug 20 2020 SimpleUpdate Robot <tc@openeuler.org> - 3.6.4-1
+- Upgrade to version 3.6.4
+
 * Sat Mar 21 2020 openEuler Buildteam <buildteam@openeuler.org> 3.5-2
 - Type:enhancement
 - ID:NA