diff --git a/.gitignore b/.gitignore
index 7aa631c..87f4e46 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,6 +26,9 @@ __pycache__/
 .harness/build-ninja-msvc-debug/
 .harness/build-ninja-msvc-debug-english/
 .harness/build-ninja-msvc-debug-prefix/
+.harness/build-ninja-msvc-debug-lazy/
+.harness/build-ninja-msvc-release-lazy/
+.harness/build-ninja-msvc-release-prefix-cl/
 .harness/build-ninja-msvc-release/
 .harness/performance/
 .harness/doxygen/