diff --git a/bootstrap.conf b/bootstrap.conf
index 6e037572a1..410e4f5dc4 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -71,6 +71,7 @@ listen
 localeconv
 maintainer-makefile
 manywarnings
+mkdtemp
 mkostemp
 mkostemps
 mktempd