diff --git a/composer.json b/composer.json
index 9f0041b..c4d1110 100644
--- a/composer.json
+++ b/composer.json
@@ -1,29 +1,29 @@
-{
-    "name": "jenssegers/mongodb-session",
-    "description": "A MongoDB session driver for Laravel 4, 5, 6, 7 and 8",
-    "keywords": ["laravel","session","mongodb","mongo","driver"],
-    "authors": [
-        {
-            "name": "Jens Segers",
-            "homepage": "http://jenssegers.be"
-        }
-    ],
-    "license" : "MIT",
-    "require": {
-        "php": ">=7.2",
-        "jenssegers/mongodb": "*",
-        "illuminate/session": "~4.0|~5.0|~6.0|~7.0|~8.0"
-    },
-    "autoload": {
-        "psr-0": {
-            "Jenssegers\\Mongodb\\Session": "src/"
-        }
-    },
-    "extra": {
-        "laravel": {
-            "providers": [
-                "Jenssegers\\Mongodb\\Session\\SessionServiceProvider"
-            ]
-        }
-    }
-}
+{
+    "name": "jenssegers/mongodb-session",
+    "description": "A MongoDB session driver for Laravel 4, 5, 6, 7, 8 and 9",
+    "keywords": ["laravel","session","mongodb","mongo","driver"],
+    "authors": [
+        {
+            "name": "Jens Segers",
+            "homepage": "http://jenssegers.be"
+        }
+    ],
+    "license" : "MIT",
+    "require": {
+        "php": ">=7.2",
+        "jenssegers/mongodb": "*",
+        "illuminate/session": "~4.0|~5.0|~6.0|~7.0|~8.0|~9.0"
+    },
+    "autoload": {
+        "psr-0": {
+            "Jenssegers\\Mongodb\\Session": "src/"
+        }
+    },
+    "extra": {
+        "laravel": {
+            "providers": [
+                "Jenssegers\\Mongodb\\Session\\SessionServiceProvider"
+            ]
+        }
+    }
+}
diff --git a/src/Jenssegers/Mongodb/Session/SessionManager.php b/src/Jenssegers/Mongodb/Session/SessionManager.php
index 475e873..0c07ff7 100644
--- a/src/Jenssegers/Mongodb/Session/SessionManager.php
+++ b/src/Jenssegers/Mongodb/Session/SessionManager.php
@@ -26,7 +26,7 @@ protected function createMongoDBDriver()
 
         $handler = new MongoDbSessionHandler($connection->getMongoClient(), $this->getMongoDBOptions($database, $collection));
 
-        $handler->open(null, 'mongodb');
+        $handler->open('', 'mongodb');
 
         return $handler;
     }