diff --git a/src/core/lib/security/credentials/alts/alts_credentials.cc b/src/core/lib/security/credentials/alts/alts_credentials.cc
index 1e58abcf215..e21900258c3 100644
--- a/src/core/lib/security/credentials/alts/alts_credentials.cc
+++ b/src/core/lib/security/credentials/alts/alts_credentials.cc
@@ -29,7 +29,7 @@
 #include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
 #include "src/core/lib/security/security_connector/alts/alts_security_connector.h"
 
-#define GRPC_ALTS_HANDSHAKER_SERVICE_URL "metadata.google.internal.:8080"
+#define GRPC_ALTS_HANDSHAKER_SERVICE_URL "dns:///metadata.google.internal.:8080"
 
 grpc_alts_credentials::grpc_alts_credentials(
     const grpc_alts_credentials_options* options,