diff --git a/metropolis/vm/smoketest/main.go b/metropolis/vm/smoketest/main.go
index a1bd3a2..c1eeae6 100644
--- a/metropolis/vm/smoketest/main.go
+++ b/metropolis/vm/smoketest/main.go
@@ -20,7 +20,7 @@
 
 import (
 	"bytes"
-	"io/ioutil"
+	"io"
 	"log"
 	"net"
 	"os"
@@ -39,7 +39,7 @@
 		if err != nil {
 			panic(err)
 		}
-		testValue, _ := ioutil.ReadAll(conn)
+		testValue, _ := io.ReadAll(conn)
 		if bytes.Equal(testValue, []byte("test123")) {
 			testResultChan <- true
 		} else {