diff --git a/controller/opt/server.py b/controller/opt/server.py
index f2c1bb6..712c1df 100644
--- a/controller/opt/server.py
+++ b/controller/opt/server.py
@@ -34,4 +34,4 @@ if __name__ == '__main__':
     application.listen(os.environ['CONTROLLER_PORT'])
 
     setup_signal_handlers()
-    IOLoop.instance().start()
+    IOLoop.current().start()
diff --git a/solvable/src/event_handler_main.py b/solvable/src/event_handler_main.py
index 56bc57d..bc44e16 100644
--- a/solvable/src/event_handler_main.py
+++ b/solvable/src/event_handler_main.py
@@ -87,7 +87,7 @@ def main():
     ))
 
     setup_signal_handlers()
-    IOLoop.instance().start()
+    IOLoop.current().start()
 
 
 if __name__ == '__main__':
diff --git a/solvable/src/pipe_io_main.py b/solvable/src/pipe_io_main.py
index 2aab217..f833418 100644
--- a/solvable/src/pipe_io_main.py
+++ b/solvable/src/pipe_io_main.py
@@ -26,7 +26,7 @@ def main():
     ))
 
     setup_signal_handlers()
-    IOLoop.instance().start()
+    IOLoop.current().start()
 
 
 if __name__ == '__main__':