diff --git a/lib/internal/util.js b/lib/internal/util.js
index f26ea970e8dce0..aa71b5b22db707 100644
--- a/lib/internal/util.js
+++ b/lib/internal/util.js
@@ -3,6 +3,7 @@
 const {
   ArrayFrom,
   ArrayIsArray,
+  ArrayPrototypeJoin,
   Error,
   Map,
   ObjectCreate,
@@ -323,10 +324,14 @@ function promisify(original) {
 
 promisify.custom = kCustomPromisifiedSymbol;
 
-// The build-in Array#join is slower in v8 6.0
+// The built-in Array#join is slower in v8 6.0
 function join(output, separator) {
   let str = '';
   if (output.length !== 0) {
+    // The built-in Array#join is faster in v8 7.8
+    if (ArrayIsArray(output)) {
+      return ArrayPrototypeJoin(output, separator);
+    }
     const lastIndex = output.length - 1;
     for (let i = 0; i < lastIndex; i++) {
       // It is faster not to use a template string here