diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index f988c0d..b7b22c2 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -472,31 +472,37 @@
 #define MBEDTLS_TLS_EXT_MAX_FRAGMENT_LENGTH          1
 
 #define MBEDTLS_TLS_EXT_TRUNCATED_HMAC               4
+#define MBEDTLS_TLS_EXT_STATUS_REQUEST               5 /* RFC 8446 TLS 1.3 */
 
 #define MBEDTLS_TLS_EXT_SUPPORTED_ELLIPTIC_CURVES   10
-#define MBEDTLS_TLS_EXT_SUPPORTED_GROUPS            10 /* Renamed in TLS 1.3 */
-
+#define MBEDTLS_TLS_EXT_SUPPORTED_GROUPS            10 /* RFC 8446 TLS 1.3 */
 #define MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS     11
 
-#define MBEDTLS_TLS_EXT_SIG_ALG                     13
-
+#define MBEDTLS_TLS_EXT_SIG_ALG                     13 /* RFC 8446 TLS 1.3 */
 #define MBEDTLS_TLS_EXT_USE_SRTP                    14
-
+#define MBEDTLS_TLS_EXT_HEARTBEAT                   15 /* RFC 8446 TLS 1.3 */
 #define MBEDTLS_TLS_EXT_ALPN                        16
 
+#define MBEDTLS_TLS_EXT_SCT                         18 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_SERV_CERT_TYPE              19 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_CLI_CERT_TYPE               20 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_PADDING                     21 /* RFC 8446 TLS 1.3 */
 #define MBEDTLS_TLS_EXT_ENCRYPT_THEN_MAC            22 /* 0x16 */
 #define MBEDTLS_TLS_EXT_EXTENDED_MASTER_SECRET  0x0017 /* 23 */
 
 #define MBEDTLS_TLS_EXT_SESSION_TICKET              35
 
-/* TLS 1.3 */
-#define MBEDTLS_TLS_EXT_PRE_SHARED_KEY              41
-#define MBEDTLS_TLS_EXT_EARLY_DATA                  42
-#define MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS          43
-#define MBEDTLS_TLS_EXT_COOKIE                      44
-#define MBEDTLS_TLS_EXT_PSK_KEY_EXCHANGE_MODES      45
+#define MBEDTLS_TLS_EXT_PRE_SHARED_KEY              41 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_EARLY_DATA                  42 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS          43 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_COOKIE                      44 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_PSK_KEY_EXCHANGE_MODES      45 /* RFC 8446 TLS 1.3 */
 
-#define MBEDTLS_TLS_EXT_KEY_SHARES                  51
+#define MBEDTLS_TLS_EXT_CERT_AUTH                   47 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_OID_FILTERS                 48 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_POST_HANDSHAKE_AUTH         49 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_SIG_ALG_CERT                50 /* RFC 8446 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_KEY_SHARE                   51 /* RFC 8446 TLS 1.3 */
 
 /* The value of the CID extension is still TBD as of
  * draft-ietf-tls-dtls-connection-id-05