diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index e1de6f8..9d700df 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -3554,6 +3554,22 @@
  */
 //#define MBEDTLS_SSL_CID_PADDING_GRANULARITY 16
 
+/** \def MBEDTLS_SSL_TLS13_PADDING_GRANULARITY
+ *
+ * This option controls the use of record plaintext padding
+ * in TLS 1.3.
+ *
+ * The padding will always be chosen so that the length of the
+ * padded plaintext is a multiple of the value of this option.
+ *
+ * Note: A value of \c 1 means that no padding will be used
+ *       for outgoing records.
+ *
+ * Note: On systems lacking division instructions,
+ *       a power of two should be preferred.
+ */
+//#define MBEDTLS_SSL_TLS13_PADDING_GRANULARITY 16
+
 /** \def MBEDTLS_SSL_OUT_CONTENT_LEN
  *
  * Maximum length (in bytes) of outgoing plaintext fragments.