diff --git a/scripts/prepare_changelog.py b/scripts/prepare_changelog.py
index a033e21..c114d4c 100644
--- a/scripts/prepare_changelog.py
+++ b/scripts/prepare_changelog.py
@@ -3,37 +3,35 @@
 
 from simplextree import __version__
 
-
 def main():
-    changelog = Path("CHANGELOG.md")
-
-    with changelog.open() as f:
-        lines = f.readlines()
-
-    insert_index: int = -1
-    for i in range(len(lines)):
-        line = lines[i]
-        if line.startswith("## Unreleased"):
-            insert_index = i + 1
-        elif line.startswith(f"## [v{__version__}]"):
-            print("CHANGELOG already up-to-date")
-            return
-        elif line.startswith("## [v"):
-            break
-
-    if insert_index < 0:
-        raise RuntimeError("Couldn't find 'Unreleased' section")
-
-    lines.insert(insert_index, "\n")
-    lines.insert(
-        insert_index + 1,
-        f"## [v{__version__}](https://github.com/peekxc/simplextree-py/releases/tag/v{__version__}) - "
-        f"{datetime.now().strftime('%Y-%m-%d')}\n",
-    )
-
-    with changelog.open("w") as f:
-        f.writelines(lines)
-
+	changelog = Path("CHANGELOG.md")
+
+	with changelog.open() as f:
+		lines = f.readlines()
+
+	insert_index: int = -1
+	for i in range(len(lines)):
+		line = lines[i]
+		if line.startswith("## Unreleased"):
+			insert_index = i + 1
+		elif line.startswith(f"## [v{__version__}]"):
+			print("CHANGELOG already up-to-date")
+			return
+		elif line.startswith("## [v"):
+			break
+
+	if insert_index < 0:
+		raise RuntimeError("Couldn't find 'Unreleased' section")
+
+	lines.insert(insert_index, "\n")
+	lines.insert(
+		insert_index + 1,
+		f"## [v{__version__}](https://github.com/peekxc/simplextree-py/releases/tag/v{__version__}) - "
+		f"{datetime.now().strftime('%Y-%m-%d')}\n",
+	)
+
+	with changelog.open("w") as f:
+		f.writelines(lines)
 
 if __name__ == "__main__":
-    main()
+	main()
diff --git a/simplextree/__init__.py b/simplextree/__init__.py
index 3644225..8e64f51 100644
--- a/simplextree/__init__.py
+++ b/simplextree/__init__.py
@@ -1,7 +1,7 @@
 # coding: utf-8
-import os
-import sys
-sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+# import os
+# import sys
+# sys.path.append(os.path.dirname(os.path.abspath(__file__)))
 
 __version__ = '0.1.0'