WWW with https resulting in SSL: couldn't create a context

Unity version: 5.1.0f3 Personal
OS: Linux/Xubuntu
I'm trying to send HTTP requests using the WWW class and have run into a snag with https This is my code:

 private WWW www;
 private bool printed = false;
 void Start () {
   var url = "https://google.com";
   www = new WWW(url);
 }
 
 void Update () {
   if(www != null && www.isDone && !printed){
     if (!string.IsNullOrEmpty(www.error))
       Debug.Log("Error: " + www.error);
     else
       Debug.Log("Received data: " + www.text);
     printed = true;
   }
 }

I'm getting the error:

SSL: couldn't create a context: error:140A90F1:lib(20):func(169):reason(241)

If I switch from https to http it works just fine