diff --git a/library/version_features.c b/library/version_features.c
index 49bba11..7152e70 100644
--- a/library/version_features.c
+++ b/library/version_features.c
@@ -615,6 +615,9 @@
 #if defined(MBEDTLS_SHA512_C)
     "MBEDTLS_SHA512_C",
 #endif /* MBEDTLS_SHA512_C */
+#if defined(MBEDTLS_SSL_ASYNC_PRIVATE_C)
+    "MBEDTLS_SSL_ASYNC_PRIVATE_C",
+#endif /* MBEDTLS_SSL_ASYNC_PRIVATE_C */
 #if defined(MBEDTLS_SSL_CACHE_C)
     "MBEDTLS_SSL_CACHE_C",
 #endif /* MBEDTLS_SSL_CACHE_C */