diff --git a/.gitignore b/.gitignore
index 3908e69f..60bf083a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,3 +54,4 @@ CHANGES.dist
 c-ares-*.tar.gz.asc
 ares_parse_mx_reply.pdf
 /[0-9]*.patch
+build