diff --git a/conn_test.go b/conn_test.go
index f474ae0c13f671e98585b3f18fa8f4b34a0db089..639666b12d44695cf4d3d834e688ee5c11dbbdf6 100644
--- a/conn_test.go
+++ b/conn_test.go
@@ -223,7 +223,7 @@ func TestConn(t *testing.T) {
 			return n2.Close()
 		})
 
-		b, err := ioutil.ReadAll(n1)
+		b, err := io.ReadAll(n1)
 		assert.Success(t, err)
 
 		_, err = n1.Read(nil)