diff --git a/atcheck-websocket/server.js b/atcheck-websocket/server.js
index 52ce1b7..e3e9b1f 100644
--- a/atcheck-websocket/server.js
+++ b/atcheck-websocket/server.js
@@ -1,5 +1,5 @@
 const WebSocket = require('ws');
-var http = require('http');
+var https = require('https');
 
 var websocket_port = 8888;
 const wss = new WebSocket.Server({port: websocket_port});
@@ -11,7 +11,10 @@ wss.on('connection', function connection(ws) {
     lookup[ws.protocol] = ws;
 });
 
-var server = http.createServer(function (request, response) {
+var server = https.createServer({
+    cert: fs.readFileSync('/etc/letsencrypt/live/atcheck.projektstudencki.pl/fullchain.pem'),
+    key: fs.readFileSync('/etc/letsencrypt/live/atcheck.projektstudencki.pl/key.pem')
+}, function (request, response) {
     response.writeHead(200, {"Content-Type": "text\plain"});
     request.setEncoding('utf8');