diff --git a/scripts/dev/generate_pattern_info.py b/scripts/dev/generate_pattern_info.py
index 9fa3394..7b2e785 100644
--- a/scripts/dev/generate_pattern_info.py
+++ b/scripts/dev/generate_pattern_info.py
@@ -2,6 +2,7 @@
 import asyncio
 import json
 import logging
+import shutil
 import sys
 from pathlib import Path
 from typing import TypedDict
@@ -45,6 +46,8 @@ async def _build_registry():
 out_dir = Path("out")
 patterns_dir = out_dir / "patterns"
 
+shutil.rmtree(patterns_dir, ignore_errors=True)
+
 out_dir.mkdir(parents=True, exist_ok=True)
 patterns_dir.mkdir(parents=True, exist_ok=True)
 for theme in Theme: