diff --git a/.travis.yml b/.travis.yml
index 66f91d8b..24111b9d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -62,6 +62,7 @@ script:
       cd template_tera && cargo check && cd ..
       cd tls && cargo check && cd ..
       cd rustls && cargo check && cd ..
+      cd udp-echo && cargo check && cd ..
       cd unix-socket && cargo check && cd ..
       cd web-cors/backend && cargo check && cd ../..
       cd websocket && cargo check && cd ..
diff --git a/Cargo.toml b/Cargo.toml
index 12aa5a71..6a9b3e27 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,8 +29,8 @@ members = [
   "template_tera",
   "tls",
   "rustls",
-  "unix-socket",
   "udp-echo",
+  "unix-socket",
   "web-cors/backend",
   "websocket",
   "websocket-chat",
diff --git a/udp-echo/Cargo.toml b/udp-echo/Cargo.toml
index 8174deab..37da872e 100644
--- a/udp-echo/Cargo.toml
+++ b/udp-echo/Cargo.toml
@@ -6,6 +6,6 @@ edition = "2018"
 
 [dependencies]
 actix = "0.7"
-tokio = "*"
-futures = "*"
-bytes = "*"
+tokio = "0.1"
+futures = "0.1"
+bytes = "0.4"
diff --git a/udp-echo/src/main.rs b/udp-echo/src/main.rs
index c3406a5d..b926020b 100644
--- a/udp-echo/src/main.rs
+++ b/udp-echo/src/main.rs
@@ -1,8 +1,3 @@
-extern crate actix;
-extern crate bytes;
-extern crate futures;
-extern crate tokio;
-
 use actix::{Actor, AsyncContext, Context, Message, StreamHandler};
 use bytes::BytesMut;
 use futures::stream::SplitSink;