diff --git a/lib/bind/.cvsignore b/lib/bind/.cvsignore
index e6acf50490..500f4edc9e 100644
--- a/lib/bind/.cvsignore
+++ b/lib/bind/.cvsignore
@@ -9,3 +9,4 @@ Makefile
 config.cache
 config.status
 timestamp
+libtool