diff --git a/transport/grpc/dial.go b/transport/grpc/dial.go
index ff3539d898..22940678d2 100644
--- a/transport/grpc/dial.go
+++ b/transport/grpc/dial.go
@@ -229,6 +229,7 @@ func dialPoolNewAuth(ctx context.Context, secure bool, poolSize int, ds *interna
 		GRPCDialOpts:          prepareDialOptsNewAuth(ds),
 		PoolSize:              poolSize,
 		Credentials:           creds,
+		ClientCertProvider:    ds.ClientCertSource,
 		APIKey:                ds.APIKey,
 		DetectOpts: &credentials.DetectOptions{
 			Scopes:          ds.Scopes,