diff --git a/CMakeLists.txt b/CMakeLists.txt
index bbfe8d9a..c04053cc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -386,7 +386,7 @@ endif()
 
 set(CPACK_PACKAGE_NAME "GmSSL")
 set(CPACK_PACKAGE_VENDOR "GmSSL develop team")
-set(CPACK_PACKAGE_VERSION "3.1.1")
+set(CPACK_PACKAGE_VERSION "3.1.2-Dev")
 
 set(CPACK_RPM_PACKAGE_GROUP "GmSSL Group")
 set(CPACK_PACKAGE_VENDOR "GmSSL Vendor")
diff --git a/include/gmssl/version.h b/include/gmssl/version.h
index be56adac..8ea7fb18 100644
--- a/include/gmssl/version.h
+++ b/include/gmssl/version.h
@@ -20,8 +20,8 @@ extern "C" {
 
 
 // Also update CPACK_PACKAGE_VERSION in CMakeLists.txt
-#define GMSSL_VERSION_NUM	30101
-#define GMSSL_VERSION_STR	"GmSSL 3.1.1"
+#define GMSSL_VERSION_NUM	30102
+#define GMSSL_VERSION_STR	"GmSSL 3.1.2 Dev"
 
 _gmssl_export int gmssl_version_num(void);
 _gmssl_export const char *gmssl_version_str(void);