diff --git a/client_test.go b/client_test.go
index 75ef696f..39118f61 100644
--- a/client_test.go
+++ b/client_test.go
@@ -10,6 +10,7 @@ import (
 	"testing"
 	"time"
 
+	_ "github.com/anacrolix/envpprof"
 	"github.com/anacrolix/utp"
 	"github.com/bradfitz/iter"
 	"gopkg.in/check.v1"