diff --git a/include/gmssl/version.h b/include/gmssl/version.h
index 9afb62e0..43186cf9 100644
--- a/include/gmssl/version.h
+++ b/include/gmssl/version.h
@@ -26,7 +26,7 @@ Version Public API
 */
 
 #define GMSSL_VERSION_NUM	30100
-#define GMSSL_VERSION_STR	"GmSSL 3.1.0 Dev"
+#define GMSSL_VERSION_STR	"GmSSL 3.1.0 PR1"
 
 _gmssl_export int gmssl_version_num(void);
 _gmssl_export const char *gmssl_version_str(void);