diff --git a/manifests/api.pp b/manifests/api.pp
index f14d58a9..f483331a 100644
--- a/manifests/api.pp
+++ b/manifests/api.pp
@@ -231,7 +231,7 @@
 #   Defaults to $facts['os_service_default']
 #
 class barbican::api (
-  $package_ensure                                = 'present',
+  Stdlib::Ensure::Package $package_ensure        = 'present',
   $bind_host                                     = '0.0.0.0',
   $bind_port                                     = '9311',
   $host_href                                     = undef,
diff --git a/manifests/init.pp b/manifests/init.pp
index 31c2552a..145f965e 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -14,8 +14,8 @@
 #   Defaults to false.
 #
 class barbican(
-  $package_ensure = 'present',
-  $purge_config   = false,
+  Stdlib::Ensure::Package $package_ensure = 'present',
+  $purge_config                           = false,
 ) {
 
   include barbican::deps
diff --git a/manifests/keystone/notification.pp b/manifests/keystone/notification.pp
index bbb48799..12293e69 100644
--- a/manifests/keystone/notification.pp
+++ b/manifests/keystone/notification.pp
@@ -38,7 +38,7 @@ class barbican::keystone::notification (
   $keystone_notification_topic            = $facts['os_service_default'],
   $keystone_notification_allow_requeue    = $facts['os_service_default'],
   $keystone_notification_thread_pool_size = $facts['os_service_default'],
-  $package_ensure                         = 'present',
+  Stdlib::Ensure::Package $package_ensure = 'present',
   Boolean $manage_service                 = true,
 ) {
 
diff --git a/manifests/retry_scheduler.pp b/manifests/retry_scheduler.pp
index 9c8a80e2..0d60ae61 100644
--- a/manifests/retry_scheduler.pp
+++ b/manifests/retry_scheduler.pp
@@ -25,11 +25,11 @@
 #   Defaults to $facts['os_service_default']
 #
 class barbican::retry_scheduler (
-  $package_ensure                = 'present',
-  Boolean $manage_service        = true,
-  Boolean $enabled               = true,
-  $initial_delay_seconds         = $facts['os_service_default'],
-  $periodic_interval_max_seconds = $facts['os_service_default'],
+  Stdlib::Ensure::Package $package_ensure = 'present',
+  Boolean $manage_service                 = true,
+  Boolean $enabled                        = true,
+  $initial_delay_seconds                  = $facts['os_service_default'],
+  $periodic_interval_max_seconds          = $facts['os_service_default'],
 ){
 
   include barbican::deps
diff --git a/manifests/worker.pp b/manifests/worker.pp
index 9e2c9b97..ec9992d1 100644
--- a/manifests/worker.pp
+++ b/manifests/worker.pp
@@ -34,9 +34,9 @@
 #   Defaults to true
 #
 class barbican::worker (
-  $package_ensure         = 'present',
-  Boolean $manage_service = true,
-  Boolean $enabled        = true,
+  Stdlib::Ensure::Package $package_ensure = 'present',
+  Boolean $manage_service                 = true,
+  Boolean $enabled                        = true,
 ) inherits barbican::params {
 
   include barbican::deps