diff --git a/.gitignore b/.gitignore
index 457e82a8..49bf2b01 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@ objdiff.json
 /dsd.pdb
 build.ninja
 .ninja_log
+.ninja_lock
\ No newline at end of file