diff --git a/requirements.txt b/requirements.txt
index b31efb9..b44a42d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 mercantile==1.0.4
-psycopg2-binary==2.7.7
-pyproj==1.9.6
+psycopg2-binary==2.8.3
+pyproj==2.2.1
 PyYAML==3.13
-SQLAlchemy==1.2.18
-tornado==5.1.1
+SQLAlchemy==1.3.7
+tornado==6.0.3
diff --git a/server.py b/server.py
index 2badeed..320cb41 100644
--- a/server.py
+++ b/server.py
@@ -97,6 +97,6 @@ def m():
         application = tornado.web.Application([(r"/tiles/([0-9]+)/([0-9]+)/([0-9]+).pbf", GetTile)])
         print("Postserve started..")
         application.listen(8080)
-        tornado.ioloop.IOLoop.instance().start()
+        tornado.ioloop.IOLoop.current().start()
 
 m()