diff --git a/Cargo.toml b/Cargo.toml
index 3923bca..d9638a3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,7 @@
 name = "mumble-web-proxy"
 version = "0.1.0"
 authors = ["Jonas Herzig <me@johni0702.de>"]
+edition = "2018"
 
 [dependencies]
 argparse = "0.2.2"
diff --git a/src/connection.rs b/src/connection.rs
index 5be9b0f..7c35106 100644
--- a/src/connection.rs
+++ b/src/connection.rs
@@ -29,9 +29,9 @@ use tokio::prelude::*;
 use tokio::timer::Delay;
 use webrtc_sdp::attribute_type::SdpAttribute;
 
-use error::Error;
-use utils::EitherS;
-use Config;
+use crate::error::Error;
+use crate::utils::EitherS;
+use crate::Config;
 
 type SessionId = u32;
 
@@ -85,14 +85,14 @@ impl User {
 
 pub struct Connection {
     config: Config,
-    inbound_client: Box<Stream<Item = ControlPacket<Serverbound>, Error = Error>>,
-    outbound_client: Box<Sink<SinkItem = ControlPacket<Clientbound>, SinkError = Error>>,
-    inbound_server: Box<Stream<Item = ControlPacket<Clientbound>, Error = Error>>,
-    outbound_server: Box<Sink<SinkItem = ControlPacket<Serverbound>, SinkError = Error>>,
+    inbound_client: Box<dyn Stream<Item = ControlPacket<Serverbound>, Error = Error>>,
+    outbound_client: Box<dyn Sink<SinkItem = ControlPacket<Clientbound>, SinkError = Error>>,
+    inbound_server: Box<dyn Stream<Item = ControlPacket<Clientbound>, Error = Error>>,
+    outbound_server: Box<dyn Sink<SinkItem = ControlPacket<Serverbound>, SinkError = Error>>,
     next_clientbound_frame: Option<ControlPacket<Clientbound>>,
     next_serverbound_frame: Option<ControlPacket<Serverbound>>,
     next_rtp_frame: Option<Vec<u8>>,
-    stream_to_be_sent: Option<Box<Stream<Item = Frame, Error = Error>>>,
+    stream_to_be_sent: Option<Box<dyn Stream<Item = Frame, Error = Error>>>,
 
     ice: Option<(ice::Agent, ice::Stream)>,
 
@@ -369,7 +369,7 @@ impl Connection {
     fn process_packet_from_client(
         &mut self,
         packet: ControlPacket<Serverbound>,
-    ) -> Box<Stream<Item = Frame, Error = Error>> {
+    ) -> Box<dyn Stream<Item = Frame, Error = Error>> {
         match packet {
             ControlPacket::Authenticate(mut message) => {
                 println!("MSG Authenticate: {:?}", message);
diff --git a/src/error.rs b/src/error.rs
index ee82c05..9f3a234 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -7,7 +7,7 @@ pub enum Error {
     Io(std::io::Error),
     ServerTls(native_tls::Error),
     ClientConnection(tungstenite::Error),
-    Misc(Box<std::error::Error>),
+    Misc(Box<dyn std::error::Error>),
 }
 
 impl Error {
diff --git a/src/main.rs b/src/main.rs
index 4ee82bf..39c1e1e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,23 +1,6 @@
 // TODO For some reason, reconnecting without reloading the page and without disconnecting the
 //      previous connection (i.e. multiple simultaneous connections) causes FF to reject our DTLS
 //      cert. Works in Chrome, or in different tabs or when properly closing the old connection.
-extern crate argparse;
-extern crate byteorder;
-extern crate bytes;
-extern crate futures;
-extern crate libnice;
-extern crate mumble_protocol;
-extern crate native_tls;
-extern crate openssl;
-extern crate rtp;
-extern crate tokio;
-extern crate tokio_codec;
-extern crate tokio_core;
-extern crate tokio_tls;
-extern crate tokio_tungstenite;
-extern crate tungstenite;
-extern crate webrtc_sdp;
-
 use argparse::StoreOption;
 use argparse::StoreTrue;
 use argparse::{ArgumentParser, Store};