diff --git a/src/Cache/Store.php b/src/Cache/Store.php
index 8d1fff7..8709123 100644
--- a/src/Cache/Store.php
+++ b/src/Cache/Store.php
@@ -40,6 +40,11 @@ public function put(string $key, $value, int $seconds);
      */
     public function remember(string $key, $value, int $seconds);
 
+    /**
+     * Store an item forever, regardless of TTL.
+     */
+    public function rememberForever(string $key, $value);
+
     /**
      * Remove an item from the cache.
      */