diff --git a/.gitignore b/.gitignore
index a8ccd115662..1779aa43ffb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,6 @@ stddef.dm
 
 # ignore midi2piano build cache
 /tools/midi2piano/midi2piano/obj/*
+yarn.lock
+.gitignore
+node_modules/.yarn-integrity