diff --git a/libratbox/src/mbedtls_ratbox.h b/libratbox/src/mbedtls_ratbox.h
index 2eb96abf..507a8366 100644
--- a/libratbox/src/mbedtls_ratbox.h
+++ b/libratbox/src/mbedtls_ratbox.h
@@ -75,6 +75,12 @@ static const int rb_mbedtls_ciphersuites[] = {
 
 	// AEAD forward-secret ciphersuites
 
+#ifdef	MBEDTLS_TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
+	MBEDTLS_TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
+	MBEDTLS_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+	MBEDTLS_TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+#endif
+
 	MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
 	MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384,
 	MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,