diff --git a/gap-grape.spec b/gap-grape.spec
index 53c5d99..b146733 100644
--- a/gap-grape.spec
+++ b/gap-grape.spec
@@ -27,6 +27,7 @@ URL:            http://www.maths.qmul.ac.uk/~leonard/grape/
 #DL-URL:        https://www.gap-system.org/pub/gap/gap4/tar.bz2/packages/grape4r7.tar.bz2
 # Original tarball has bundled third-party code with a Non-Commercial clause
 Source:         grape4r7.tar.xz
+Source8:        sanitize_source.sh
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildArch:	noarch
 BuildRequires:  gap-rpm-devel