diff --git a/bundler.js b/bundler.js
index 79c4ace..03709f3 100644
--- a/bundler.js
+++ b/bundler.js
@@ -80,7 +80,7 @@ export async function installBundler(bundlerVersionInput, rubygemsInputSet, lock
     } else if (common.isBundler2Default(engine, rubyVersion)) {
       console.log(`Using Bundler 2 shipped with ${engine}-${rubyVersion}`)
       return '2'
-    } else if (common.isBundler1Default(engine, rubyVersion) && engine !== 'ruby') {
+    } else if (common.isBundler1Default(engine, rubyVersion)) {
       console.log(`Using Bundler 1 shipped with ${engine}-${rubyVersion}`)
       return '1'
     } else {
diff --git a/dist/index.js b/dist/index.js
index bf15052..e16c42b 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -94,7 +94,7 @@ async function installBundler(bundlerVersionInput, rubygemsInputSet, lockFile, p
     } else if (common.isBundler2Default(engine, rubyVersion)) {
       console.log(`Using Bundler 2 shipped with ${engine}-${rubyVersion}`)
       return '2'
-    } else if (common.isBundler1Default(engine, rubyVersion) && engine !== 'ruby') {
+    } else if (common.isBundler1Default(engine, rubyVersion)) {
       console.log(`Using Bundler 1 shipped with ${engine}-${rubyVersion}`)
       return '1'
     } else {