diff --git a/src/Redis.php b/src/Redis.php
index 7119307..89319d6 100644
--- a/src/Redis.php
+++ b/src/Redis.php
@@ -102,6 +102,29 @@ public function getOptions(): RedisOptions
         return $this->options;
     }
 
+    public function getPersistentId(bool $update = false): ?string
+    {
+        $options = $this->getOptions();
+
+        if (!$options->isPersistent()) {
+            return null;
+        }
+
+        if ($update === false) {
+            $persistentId = $options->getPersistentId();
+            if ($persistentId !== null) {
+                return $persistentId;
+            }
+        }
+
+        $persistentId = $this->getRedisResource()->getPersistentID();
+        if (!is_string($persistentId)) {
+            return null;
+        }
+
+        return $persistentId;
+    }
+
     /**
      * {@inheritDoc}
      */