diff --git a/isatty_bsd.go b/isatty_bsd.go
index 39bbcf0..d569c0c 100644
--- a/isatty_bsd.go
+++ b/isatty_bsd.go
@@ -1,5 +1,5 @@
-//go:build (darwin || freebsd || openbsd || netbsd || dragonfly) && !appengine
-// +build darwin freebsd openbsd netbsd dragonfly
+//go:build (darwin || freebsd || openbsd || netbsd || dragonfly || hurd) && !appengine
+// +build darwin freebsd openbsd netbsd dragonfly hurd
 // +build !appengine
 
 package isatty