diff --git a/.gitignore b/.gitignore
index 2873e01c7aed4ae631d9df64d054607ff3f769de..ba22e7b114e1f73df0ca7c50c1f225d9efda6af3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,3 +47,6 @@ MANIFEST
 
 # Per-project virtualenvs
 .venv*/
+.ninja_deps
+.ninja_log
+build.ninja