diff --git a/lazy-blocks.php b/lazy-blocks.php
index b266bc96..fbe86bb0 100644
--- a/lazy-blocks.php
+++ b/lazy-blocks.php
@@ -300,6 +300,18 @@ public function add_block( $data ) {
 			return $this->blocks()->add_block( $data );
 		}
 
+		/**
+		 * Add lazyblocks block collection.
+		 *
+		 * This method is does nothing in Free plugin,
+		 * the actual implementation is in Pro plugin.
+		 *
+		 * @param array $data - collection data.
+		 */
+		public function add_collection( $data ) {
+			do_action( 'lzb/add_collection', $data );
+		}
+
 		/**
 		 * Add lazyblocks template.
 		 *