diff --git a/.editorconfig b/.editorconfig
index 873470a..bc1a4e7 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -17,3 +17,6 @@ trim_trailing_whitespace = false
 
 [*.html]
 trim_trailing_whitespace = false
+
+[*.py]
+indent_size = 4
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2282331..810008d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python 3.10
         uses: actions/setup-python@v4
         with:
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a230a78
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.venv/
+__pycache__/
diff --git a/tests/helper.py b/tests/helper.py
index aec6cbc..66ffa81 100644
--- a/tests/helper.py
+++ b/tests/helper.py
@@ -18,7 +18,7 @@ class TempRepository:
             repo_work_dir = os.path.join(self._system_tmpdir, repo_work_dir)
         self._cwd = repo_work_dir
         self._tempdirname = self._cwd[len(self._system_tmpdir) + 1:]
-        self._git_repo = git.Repo.init(repo_work_dir)
+        self._git_repo = git.Repo.init(repo_work_dir, b="default")
         self._files = []
 
     def switch_cwd_under_repo(self):
diff --git a/tests/test_archive_file.py b/tests/test_git_archive_file.py
similarity index 95%
rename from tests/test_archive_file.py
rename to tests/test_git_archive_file.py
index 5ca4860..6874322 100644
--- a/tests/test_archive_file.py
+++ b/tests/test_git_archive_file.py
@@ -28,8 +28,8 @@ class TestGitArchiveFile:
 
     def test_archive_file_on_any_not_tags_branch_with_default_branch(self, temp_repo):
         git = temp_repo.get_repo_git()
-        git.checkout("master")
-        git.config("git-extras.default-branch", "master")
+        git.checkout("default")
+        git.config("git-extras.default-branch", "default")
         temp_repo.invoke_installed_extras_command("archive-file")
         filename = "{0}.{1}.zip".format(
                 temp_repo.get_repo_dirname(),
@@ -53,13 +53,13 @@ class TestGitArchiveFile:
         filename = "{0}.{1}.{2}.zip".format(
                 "backslash-dir",
                 git.describe("--always", "--long"),
-                "master")
+                "default")
         assert filename in os.listdir()
 
     def test_archive_file_on_tag_name_has_slash(self, temp_repo):
         temp_repo.switch_cwd_under_repo()
         git = temp_repo.get_repo_git()
-        git.checkout("master")
+        git.checkout("default")
         git.tag("--delete", "0.1.0")
         git.tag("0.1.0/slash", "-m", "bump: 0.1.0")
         temp_repo.invoke_installed_extras_command("archive-file")