diff --git a/include/mbedtls/ssl_ciphersuites.h b/include/mbedtls/ssl_ciphersuites.h
index c770528..5352d75 100644
--- a/include/mbedtls/ssl_ciphersuites.h
+++ b/include/mbedtls/ssl_ciphersuites.h
@@ -389,6 +389,10 @@
 
 #if defined(MBEDTLS_PK_C)
 mbedtls_pk_type_t mbedtls_ssl_get_ciphersuite_sig_pk_alg( const mbedtls_ssl_ciphersuite_t *info );
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+psa_algorithm_t mbedtls_ssl_get_ciphersuite_sig_pk_ext_alg( const mbedtls_ssl_ciphersuite_t *info );
+psa_key_usage_t mbedtls_ssl_get_ciphersuite_sig_pk_ext_usage( const mbedtls_ssl_ciphersuite_t *info );
+#endif
 mbedtls_pk_type_t mbedtls_ssl_get_ciphersuite_sig_alg( const mbedtls_ssl_ciphersuite_t *info );
 #endif