diff --git a/.buildkite/scripts/generate-nightly-index.py b/.buildkite/scripts/generate-nightly-index.py
index bb4a74a70..7e02e5f94 100755
--- a/.buildkite/scripts/generate-nightly-index.py
+++ b/.buildkite/scripts/generate-nightly-index.py
@@ -12,6 +12,8 @@ from pathlib import Path
 from typing import Any
 from urllib.parse import quote
 
+import re
+
 
 def normalize_package_name(name: str) -> str:
     """Normalize package name per PEP 503."""