diff --git a/launch_slave.py b/launch_slave.py
index 7c1840d1..a5fd60f7 100644
--- a/launch_slave.py
+++ b/launch_slave.py
@@ -59,7 +59,8 @@ launch_script = """perl -ple 's/main/main universe/' -i /etc/apt/sources.list
 apt-get update
 apt-get -y --force-yes upgrade
 apt-get install -y --force-yes git rubygems
-gem install --no-rdoc --no-ri puppet
+gem install --no-rdoc --no-ri --version=1.6.0 facter
+gem install --no-rdoc --no-ri --version=2.7.1 puppet
 cd /root
 git clone git://github.com/openstack/openstack-ci-puppet.git
 cd openstack-ci-puppet