diff --git a/tail_posix.go b/tail_posix.go
index bc4dc335..8741c940 100644
--- a/tail_posix.go
+++ b/tail_posix.go
@@ -1,4 +1,4 @@
-// +build linux darwin freebsd netbsd openbsd
+// +build linux darwin freebsd netbsd openbsd dragonfly
 
 package tail