diff --git a/app/Models/License.php b/app/Models/License.php
index 11f1326aa..049675d42 100755
--- a/app/Models/License.php
+++ b/app/Models/License.php
@@ -22,7 +22,14 @@ class License extends Depreciable
     protected $injectUniqueIdentifier = true;
     use ValidatingTrait;
 
-    protected $dates = ['deleted_at'];
+    // We set these as protected dates so that they will be easily accessible via Carbon
+    protected $dates = [
+        'created_at',
+        'updated_at',
+        'deleted_at',
+        'purchase_date'
+    ];
+
 
     public $timestamps = true;
 
diff --git a/upgrade.php b/upgrade.php
index 653214b0d..07257043e 100644
--- a/upgrade.php
+++ b/upgrade.php
@@ -106,7 +106,7 @@ echo "--------------------------------------------------------\n\n";
 if (file_exists('composer.phar')) {
     echo "-- Local composer.phar detected, so we'll use that.\n\n";
     $composer_dump = shell_exec('php composer.phar dump');
-    $composer = shell_exec('php composer.phar install --prefer-source');
+    $composer = shell_exec('php composer.phar install --no-dev --prefer-source');
 
 } else {
     echo "-- We couldn't find a local composer.phar - trying globally.\n\n";