diff --git a/dist/npmci.install.js b/dist/npmci.install.js
index ed7db93..29f48d6 100644
--- a/dist/npmci.install.js
+++ b/dist/npmci.install.js
@@ -14,7 +14,7 @@ exports.install = (versionArg) => {
         version = '6';
     }
     else if (versionArg === 'legacy') {
-        version = '4';
+        version = '6';
     }
     else {
         version = versionArg;
diff --git a/ts/npmci.install.ts b/ts/npmci.install.ts
index fb8a822..610fda6 100644
--- a/ts/npmci.install.ts
+++ b/ts/npmci.install.ts
@@ -12,7 +12,7 @@ export let install = (versionArg) => {
     } else if (versionArg === 'lts') {
         version = '6'
     } else if (versionArg === 'legacy') {
-        version = '4'
+        version = '6'
     } else {
         version = versionArg
     };