diff --git a/.gitignore b/.gitignore
index 944bc6c..8eb03ef 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,6 +21,7 @@ Makefile.in
 /py-compile
 /test-driver
 /ylwrap
+/mkinstalldirs
 
 # http://www.gnu.org/software/autoconf