diff --git a/qubesbuilder/plugins/chroot_rpm/mock/fedora.cfg b/qubesbuilder/plugins/chroot_rpm/mock/fedora.cfg
index 041d93f4..9a7f1d5a 100644
--- a/qubesbuilder/plugins/chroot_rpm/mock/fedora.cfg
+++ b/qubesbuilder/plugins/chroot_rpm/mock/fedora.cfg
@@ -17,6 +17,10 @@ config_opts['use_bootstrap'] = False
 config_opts['plugin_conf']['bind_mount_enable'] = os.environ.get("BIND_MOUNT_ENABLE", False)
 config_opts['plugin_conf']['bind_mount_opts']['dirs'].append(('@BUILDER_DIR@/plugins', '/plugins' ))
 
+# mount the pesign socket into the chroot
+config_opts['plugin_conf']['bind_mount_opts']['dirs'].append(('/var/run/pesign', '/var/run/pesign' ))
+config_opts['nspawn_args'] += ['--bind=/var/run/pesign']
+
 config_opts['dnf.conf'] = """
 [main]
 keepcache=1