diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a0828b142..f9ad67adb 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -294,8 +294,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
-      # Pin to specific version until Lambda Builders support bundler 4.0.0
-      - uses: ruby/setup-ruby@v1.268.0
+      - uses: ruby/setup-ruby@v1
         with:
           ruby-version: "3.2"
       - run: make init
diff --git a/aws_lambda_builders/workflows/ruby_bundler/bundler.py b/aws_lambda_builders/workflows/ruby_bundler/bundler.py
index 27d1a0239..fe3f46859 100644
--- a/aws_lambda_builders/workflows/ruby_bundler/bundler.py
+++ b/aws_lambda_builders/workflows/ruby_bundler/bundler.py
@@ -36,7 +36,7 @@ def __init__(self, osutils, bundler_exe=None):
         self.osutils = osutils
         if bundler_exe is None:
             if osutils.is_windows():
-                bundler_exe = "bundler.bat"
+                bundler_exe = "bundle.bat"
             else:
                 bundler_exe = "bundle"
 
diff --git a/tests/unit/workflows/ruby_bundler/test_bundler.py b/tests/unit/workflows/ruby_bundler/test_bundler.py
index 4a5515cca..1b93872ac 100644
--- a/tests/unit/workflows/ruby_bundler/test_bundler.py
+++ b/tests/unit/workflows/ruby_bundler/test_bundler.py
@@ -38,7 +38,7 @@ def test_run_executes_bundler_on_windows(self):
         self.osutils.is_windows.side_effect = [True]
         self.under_test = SubprocessBundler(self.osutils)
         self.under_test.run(["install"])
-        self.osutils.popen.assert_called_with(["bundler.bat", "install"], cwd=None, stderr="PIPE", stdout="PIPE")
+        self.osutils.popen.assert_called_with(["bundle.bat", "install"], cwd=None, stderr="PIPE", stdout="PIPE")
 
     def test_uses_custom_bundler_path_if_supplied(self):
         self.under_test.run(["install"])