diff --git a/php/src/db/CapacitorStorage.php b/php/src/db/CapacitorStorage.php
index e8bc011..a58349a 100644
--- a/php/src/db/CapacitorStorage.php
+++ b/php/src/db/CapacitorStorage.php
@@ -44,6 +44,7 @@ abstract class CapacitorStorage {
   const GENLIC_DEFINITION = "varchar(80)";
   const GENLIB_DEFINITION = "varchar(255)";
   const GENTEXT_DEFINITION = "mediumtext";
+  const GENUUID_DEFINITION = "varchar(36)";
 
   protected static function gencol($def): string {
     if (!is_string($def)) $def = strval($def);
@@ -55,6 +56,7 @@ abstract class CapacitorStorage {
     case "genlic": $def = static::GENLIC_DEFINITION; break;
     case "genlib": $def = static::GENLIB_DEFINITION; break;
     case "gentext": $def = static::GENTEXT_DEFINITION; break;
+    case "genuuid": $def = static::GENUUID_DEFINITION; break;
     }
     return $def;
   }
diff --git a/php/src/db/pgsql/PgsqlStorage.php b/php/src/db/pgsql/PgsqlStorage.php
index 124a6c2..c3dc0b5 100644
--- a/php/src/db/pgsql/PgsqlStorage.php
+++ b/php/src/db/pgsql/PgsqlStorage.php
@@ -11,6 +11,7 @@ class PgsqlStorage extends CapacitorStorage {
   const SERTS_DEFINITION = "timestamp";
   const GENSERIAL_DEFINITION = "serial primary key";
   const GENTEXT_DEFINITION = "text";
+  const GENUUID_DEFINITION = "uuid";
 
   function __construct($pgsql) {
     $this->db = Pgsql::with($pgsql);