diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index cb299b1..462b8f6 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -567,6 +567,24 @@
 }
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 
+#if defined(MBEDTLS_ECP_C) && defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+static uint16_t ssl_tls13_sig_algs_for_test[] = {
+#if defined(MBEDTLS_SHA256_C) && defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
+    MBEDTLS_TLS13_SIG_ECDSA_SECP256R1_SHA256,
+#endif
+#if defined(MBEDTLS_SHA512_C) && defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
+    MBEDTLS_TLS13_SIG_ECDSA_SECP384R1_SHA384,
+#endif
+#if defined(MBEDTLS_SHA512_C) && defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
+    MBEDTLS_TLS13_SIG_ECDSA_SECP521R1_SHA512,
+#endif
+#if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
+    MBEDTLS_TLS13_SIG_RSA_PSS_RSAE_SHA256,
+#endif
+    MBEDTLS_TLS13_SIG_NONE
+};
+#endif /* MBEDTLS_ECP_C && MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
 int report_cid_usage( mbedtls_ssl_context *ssl,
                       const char *additional_description )
@@ -1731,6 +1749,10 @@
     memset( peer_crt_info, 0, sizeof( peer_crt_info ) );
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
+    mbedtls_ssl_conf_sig_algs( &conf, ssl_tls13_sig_algs_for_test );
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL && MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
+
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
     if( opt.cid_enabled == 1 || opt.cid_enabled_renego == 1 )
     {