diff --git a/.gitignore b/.gitignore
index 1e2f2065581..7f023b70254 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,6 +26,7 @@
 # Built by 'autogen.sh'.
 /aclocal.m4
 /configure
+build-aux/ar-lib
 build-aux/compile
 build-aux/config.guess
 build-aux/config.sub