diff --git a/.gitmodules b/.gitmodules
index ca27060a8..19f1b085a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,5 +4,5 @@
 	branch = master
 [submodule "src/raklib"]
 	path = src/raklib
-	url = https://github.com/PocketMine/RakLib.git
+	url = git@github.com:PocketMine/RakLib.git
 	branch = master
diff --git a/src/pocketmine/network/RakLibInterface.php b/src/pocketmine/network/RakLibInterface.php
index 5d98bcaaf..b6ad89bba 100644
--- a/src/pocketmine/network/RakLibInterface.php
+++ b/src/pocketmine/network/RakLibInterface.php
@@ -190,6 +190,10 @@ class RakLibInterface implements ServerInstance, SourceInterface{
 		$this->interface->sendOption("name", "MCCPP;Demo;$name");
 	}
 
+	public function setPortCheck($name){
+		$this->interface->sendOption("portChecking", (bool) $name);
+	}
+
 	public function handleOption($name, $value){
 		if($name === "bandwidth"){
 			$v = unserialize($value);
diff --git a/src/raklib b/src/raklib
index 243e611b9..fadd6a777 160000
--- a/src/raklib
+++ b/src/raklib
@@ -1 +1 @@
-Subproject commit 243e611b935242ca33c082fee83c0f1f5cddaaf7
+Subproject commit fadd6a777956ead7f8e097a38051527cdc165ab2