diff --git a/app/Models/Activity.php b/app/Models/Activity.php
index f00042dc8d74..f5a8ce9eb297 100644
--- a/app/Models/Activity.php
+++ b/app/Models/Activity.php
@@ -109,6 +109,14 @@ class Activity extends StaticModel
     const DELETE_RECURRING_EXPENSE = 123; 
     const RESTORE_RECURRING_EXPENSE = 124; 
 
+    const CREATE_PURCHASE_ORDER = 130;
+    const UPDATE_PURCHASE_ORDER = 131;
+    const ARCHIVE_PURCHASE_ORDER = 132; 
+    const DELETE_PURCHASE_ORDER = 133; 
+    const RESTORE_PURCHASE_ORDER = 134;
+    const EMAIL_PURCHASE_ORDER = 135; 
+    const VIEW_PURCHASE_ORDER = 136;
+
     protected $casts = [
         'is_system' => 'boolean',
         'updated_at' => 'timestamp',
diff --git a/resources/lang/en/texts.php b/resources/lang/en/texts.php
index 7ac9c2aeb5e9..d479d075d58b 100644
--- a/resources/lang/en/texts.php
+++ b/resources/lang/en/texts.php
@@ -4612,6 +4612,14 @@ $LANG = array(
     'purchase_order_number_short' => 'Purchase Order #',
     'inventory_notification_subject' => 'Inventory threshold notification for product: :product',
     'inventory_notification_body' => 'Threshold of :amount has been reach for product: :product',
+    'activity_130' => ':user created purchase order :purchase_order',
+    'activity_131' => ':user updated purchase order :purchase_order',
+    'activity_132' => ':user archived purchase order :purchase_order',
+    'activity_133' => ':user deleted purchase order :purchase_order',
+    'activity_134' => ':user restored purchase order :purchase_order',
+    'activity_135' => ':user emailed purchase order :purchase_order',
+    'activity_136' => ':contact viewed purchase order :purchase_order',
+
 );
 
 return $LANG;