diff --git a/.gitignore b/.gitignore
index de48481bf1..1677a18fc8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,6 +28,7 @@ src/cmd/**/y.output
 src/cmd/cgo/zdefaultcc.go
 src/cmd/go/zdefaultcc.go
 src/cmd/internal/obj/zbootstrap.go
+src/go/build/zcgo.go
 src/go/doc/headscan
 src/runtime/internal/sys/zversion.go
 src/unicode/maketables