diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 2d2504b..c636ad4 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -2766,6 +2766,8 @@
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3) && defined(MBEDTLS_SSL_SESSION_TICKETS)
 
+#define MBEDTLS_SSL_TLS1_3_MAX_ALLOWED_TICKET_LIFETIME (604800)
+
 static inline unsigned int mbedtls_ssl_session_get_ticket_flags(
     mbedtls_ssl_session *session, unsigned int flags)
 {