diff --git a/building/qubes-builder.md b/building/qubes-builder.md
index 143f7911..bf6d3088 100644
--- a/building/qubes-builder.md
+++ b/building/qubes-builder.md
@@ -33,10 +33,12 @@ In order to use it, one should use an rpm-based distro, like Fedora :), and shou
 -   dpkg-dev
 -   debootstrap
 -   PyYAML
+-   perl-Digest-MD5
+-   perl-Digest-SHA
 
 Usually one can install those packages by just issuing:
 
-    sudo dnf install gpg git createrepo rpm-build make wget rpmdevtools python2-sh dialog rpm-sign dpkg-dev debootstrap PyYAML
+    sudo dnf install gpg git createrepo rpm-build make wget rpmdevtools python2-sh dialog rpm-sign dpkg-dev debootstrap PyYAML perl-Digest-MD5 perl-Digest-SHA
 
 The build system creates build environments in chroots and so no other packages are needed on the host. All files created by the build system are contained within the qubes-builder directory. The full build requires some 25GB of free space, so keep that in mind when deciding where to place this directory.