diff --git a/manifests/config.pp b/manifests/config.pp
index 732b5557..c145ecc8 100644
--- a/manifests/config.pp
+++ b/manifests/config.pp
@@ -33,8 +33,8 @@ class barbican::config (
 
   include ::barbican::deps
 
-  validate_hash($api_config)
-  validate_hash($api_paste_ini_config)
+  validate_legacy(Hash, 'validate_hash', $api_config)
+  validate_legacy(Hash, 'validate_hash', $api_paste_ini_config)
 
   create_resources('barbican_config', $api_config)
   create_resources('barbican_api_paste_ini', $api_paste_ini_config)
diff --git a/manifests/db.pp b/manifests/db.pp
index 8febe246..72a413c1 100644
--- a/manifests/db.pp
+++ b/manifests/db.pp
@@ -67,8 +67,8 @@ class barbican::db (
 
   include ::barbican::deps
 
-  validate_re($database_connection,
-    '^(sqlite|mysql(\+pymysql)?|postgresql):\/\/(\S+:\S+@\S+\/\S+)?')
+  validate_legacy(Oslo::Dbconn, 'validate_re', $database_connection,
+    ['^(sqlite|mysql(\+pymysql)?|postgresql):\/\/(\S+:\S+@\S+\/\S+)?'])
 
   oslo::db { 'barbican_config':
     connection     => $database_connection,
diff --git a/manifests/db/mysql.pp b/manifests/db/mysql.pp
index d4d19dbf..410b6f47 100644
--- a/manifests/db/mysql.pp
+++ b/manifests/db/mysql.pp
@@ -45,7 +45,7 @@ class barbican::db::mysql(
 
   include ::barbican::deps
 
-  validate_string($password)
+  validate_legacy(String, 'validate_string', $password)
 
   ::openstacklib::db::mysql { 'barbican':
     user          => $user,
diff --git a/manifests/policy.pp b/manifests/policy.pp
index b88ad2ed..41412ceb 100644
--- a/manifests/policy.pp
+++ b/manifests/policy.pp
@@ -31,7 +31,7 @@ class barbican::policy (
   include ::barbican::deps
   include ::barbican::params
 
-  validate_hash($policies)
+  validate_legacy(Hash, 'validate_hash', $policies)
 
   Openstacklib::Policy::Base {
     file_path  => $policy_path,