diff --git a/acf.php b/acf.php
index 950a10c..dc3a8af 100644
--- a/acf.php
+++ b/acf.php
@@ -80,6 +80,16 @@ class ACF
 		 */
 		public $instances = [];
 
+		/**
+		 * Predefined properties to avoid dynamic property deprecation warnings.
+		 */
+		public $fields;
+		public $loop;
+		public $revisions;
+		public $validation;
+		public $form_front;
+		public $admin_tools;
+
 		/**
 		 * A dummy constructor to ensure ACF is only setup once.
 		 *