diff --git a/Python.gitignore b/Python.gitignore
index 60a821a5..82f92755 100644
--- a/Python.gitignore
+++ b/Python.gitignore
@@ -109,6 +109,7 @@ ipython_config.py
 #   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
 .pdm.toml
 .pdm-python
+.pdm-build/
 
 # PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
 __pypackages__/