diff --git a/aggregate.spec b/aggregate.spec
index 23d18bb..7ece468 100644
--- a/aggregate.spec
+++ b/aggregate.spec
@@ -7,6 +7,7 @@ License:        ISC
 URL:            http://ftp.isc.org/isc/aggregate/
 Source0:        http://ftp.isc.org/isc/aggregate/aggregate-%{version}.tar.gz
 Patch0:         aggregate-fedora.patch
+BuildRequires:         perl-generators
 
 %description
 aggregate takes a list of prefixes in conventional format on stdin,