diff --git a/src/Elasticsearch/ClientBuilder.php b/src/Elasticsearch/ClientBuilder.php
index 464a4ce28..8df418270 100644
--- a/src/Elasticsearch/ClientBuilder.php
+++ b/src/Elasticsearch/ClientBuilder.php
@@ -381,7 +381,10 @@ public function setSSLKey(string $key, string $password = null): ClientBuilder
         return $this;
     }
 
-    public function setSSLVerification(bool $value = true): ClientBuilder
+    /**
+     *  @param bool|string $value
+     */
+    public function setSSLVerification($value = true): ClientBuilder
     {
         $this->sslVerification = $value;