diff --git a/.gitignore b/.gitignore
index 88a3586..03e5a21 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,6 @@ uv.lock
 # Python build and test output
 __pycache__/
 /test/test_output/
+
+# Virtualenv (created with create_cdsc_venv on klone)
+/.venv/