diff --git a/manifests/api.pp b/manifests/api.pp
index 5667ff2..990411f 100644
--- a/manifests/api.pp
+++ b/manifests/api.pp
@@ -68,9 +68,9 @@ class refstack::api () {
 
   # Download the latest RefStack Source.
   vcsrepo { $src_api_root:
-    ensure   => latest,
+    ensure   => present,
     provider => git,
-    revision => 'master',
+    revision => $refstack::params::release_revision,
     source   => 'https://git.openstack.org/openstack/refstack/',
     require  => Package['git']
   }
diff --git a/manifests/app.pp b/manifests/app.pp
index 0bd523f..6170801 100644
--- a/manifests/app.pp
+++ b/manifests/app.pp
@@ -56,11 +56,11 @@ class refstack::app () {
 
   # Download the latest RefStack Source.
   vcsrepo { $src_www_root:
-    ensure   => latest,
+    ensure   => present,
     owner    => $user,
     group    => $group,
     provider => git,
-    revision => 'master',
+    revision => $refstack::params::release_revision,
     source   => 'https://git.openstack.org/openstack/refstack/',
     require  => Package['git']
   }
diff --git a/manifests/params.pp b/manifests/params.pp
index 0c530a3..096817a 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -18,6 +18,9 @@
 #
 class refstack::params (
 
+  # Current release revision
+  $release_revision = '1.0.0',
+
   # Source and install directories.
   $src_api_root           = '/opt/refstack-api',
   $src_www_root           = '/opt/refstack-www',