diff --git a/utils/dartfmt/.gitignore b/utils/dartfmt/.gitignore
new file mode 100644
index 00000000000..357f6bb2755
--- /dev/null
+++ b/utils/dartfmt/.gitignore
@@ -0,0 +1,2 @@
+/dartfmt.Makefile
+/dartfmt.target.mk