diff --git a/0001-CVE-2022-37434.patch b/0001-CVE-2022-37434.patch
deleted file mode 100644
index 1457448..0000000
--- a/0001-CVE-2022-37434.patch
+++ /dev/null
@@ -1,35 +0,0 @@
-From eff308af425b67093bab25f80f1ae950166bece1 Mon Sep 17 00:00:00 2001
-From: Mark Adler <fork@madler.net>
-Date: Sat, 30 Jul 2022 15:51:11 -0700
-Subject: [PATCH] Fix a bug when getting a gzip header extra field with
- inflate().
- 
-If the extra field was larger than the space the user provided with
-inflateGetHeader(), and if multiple calls of inflate() delivered
-the extra header data, then there could be a buffer overflow of the
-provided space. This commit assures that provided space is not
-exceeded.
- 
-Conflict:NA
-Reference:https://github.com/madler/zlib/commit/eff308af425b67093bab25f80f1ae950166bece1
----
- zlib/inflate.c | 5 +++--
- 1 file changed, 3 insertions(+), 2 deletions(-)
- 
-diff --git a/zlib/inflate.c b/zlib/inflate.c
-index 7be8c6366..7a7289749 100644
---- a/zlib/inflate.c
-+++ b/zlib/inflate.c
-@@ -763,9 +763,10 @@ int flush;
-                 copy = state->length;
-                 if (copy > have) copy = have;
-                 if (copy) {
-+                    len = state->head->extra_len - state->length;
-                     if (state->head != Z_NULL &&
--                        state->head->extra != Z_NULL) {
--                        len = state->head->extra_len - state->length;
-+                        state->head->extra != Z_NULL &&
-+                        len < state->head->extra_max) {
-                         zmemcpy(state->head->extra + len, next,
-                                 len + copy > state->head->extra_max ?
-                                 state->head->extra_max - len : copy);
diff --git a/0002-CVE-2022-37434.patch b/0002-CVE-2022-37434.patch
deleted file mode 100644
index 513e101..0000000
--- a/0002-CVE-2022-37434.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-From 1eb7682f845ac9e9bf9ae35bbfb3bad5dacbd91d Mon Sep 17 00:00:00 2001
-From: Mark Adler <fork@madler.net>
-Date: Mon, 8 Aug 2022 10:50:09 -0700
-Subject: [PATCH] Fix extra field processing bug that dereferences NULL
- state->head.
- 
-The recent commit to fix a gzip header extra field processing bug
-introduced the new bug fixed here.
- 
-Conflict:NA
-Reference:https://github.com/madler/zlib/commit/1eb7682f845ac9e9bf9ae35bbfb3bad5dacbd91d
----
- zlib/inflate.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
- 
-diff --git a/zlib/inflate.c b/zlib/inflate.c
-index 7a7289749..2a3c4fe98 100644
---- a/zlib/inflate.c
-+++ b/zlib/inflate.c
-@@ -763,10 +763,10 @@ int flush;
-                 copy = state->length;
-                 if (copy > have) copy = have;
-                 if (copy) {
--                    len = state->head->extra_len - state->length;
-                     if (state->head != Z_NULL &&
-                         state->head->extra != Z_NULL &&
--                        len < state->head->extra_max) {
-+                        (len = state->head->extra_len - state->length) <
-+                            state->head->extra_max) {
-                         zmemcpy(state->head->extra + len, next,
-                                 len + copy > state->head->extra_max ?
-                                 state->head->extra_max - len : copy);
diff --git a/mariadb-connector-c-3.1.13-src.tar.gz b/mariadb-connector-c-3.1.13-src.tar.gz
deleted file mode 100644
index 50d020b..0000000
Binary files a/mariadb-connector-c-3.1.13-src.tar.gz and /dev/null differ
diff --git a/mariadb-connector-c-3.1.21-src.tar.gz b/mariadb-connector-c-3.1.21-src.tar.gz
new file mode 100644
index 0000000..3a9d218
Binary files /dev/null and b/mariadb-connector-c-3.1.21-src.tar.gz differ
diff --git a/mariadb-connector-c.spec b/mariadb-connector-c.spec
index 357056d..024e4f8 100644
--- a/mariadb-connector-c.spec
+++ b/mariadb-connector-c.spec
@@ -1,13 +1,11 @@
 Name:           mariadb-connector-c
-Version:        3.1.13
+Version:        3.1.21
 Release:        7
 Summary:        MariaDB connector library in C
 License:        LGPLv2+
 URL:            https://github.com/MariaDB/mariadb-connector-c
 Source0:        https://downloads.mariadb.com/Connectors/c/connector-c-%{version}/mariadb-connector-c-%{version}-src.tar.gz
 
-Patch0001:	0001-CVE-2022-37434.patch
-Patch0002:	0002-CVE-2022-37434.patch
 Patch0003:      mariadb-connector-c-3.1.13-src-sw.patch
 
 BuildRequires:  libcurl-devel zlib-devel openssl-devel
@@ -100,6 +98,9 @@ end
 %endif
 
 %changelog
+* Fri Jun  9 2023 dillon chen <dillon.chen@gmail.com> - 3.1.21-1
+- update package to 3.1.21
+
 * Thu Mar 30 2023 laokz <zhangkai@iscas.ac.cn> - 3.1.13-7
 - Fix riscv64 pkgconfig directory