--- a/modules/releaserunner/manifests/init.pp
+++ b/modules/releaserunner/manifests/init.pp
@@ -37,30 +37,32 @@ class releaserunner {
                 'arrow==0.5.4',
                 'buildbot==0.8.7p1',
                 'certifi==0.0.8',
                 'chunkify==1.2',
                 'cryptography==0.6',
                 'decorator==3.4.0',
                 'ecdsa==0.10',
                 'enum34==1.0.4',
+                'futures==3.1.1',
                 'mohawk==0.3.1',
                 'paramiko==1.9.0',
                 'pycrypto==2.6.1',
                 'python-dateutil==1.5',
                 'python-jose==0.5.2',
                 'redo==1.5',
                 'releasetasks==0.3.3',
                 'requests==2.6.0',
                 'requests-hawk==1.0.0',
                 'simplejson==2.6.2',
                 'singledispatch==3.4.0.3',
                 'six==1.9.0',
                 'sqlalchemy-migrate==0.7.2',
                 'taskcluster==0.0.24',
+                'toposort==1.0',
                 'wsgiref==0.1.2',
                 'zope.interface==4.0.2',
             ];
     }
 
     file {
         "${releaserunner::settings::root}/release-runner.ini":
             require   => Python::Virtualenv[$releaserunner::settings::root],