diff --git a/example/Cargo.toml b/example/Cargo.toml
index 49bc71f1..d94ba95e 100644
--- a/example/Cargo.toml
+++ b/example/Cargo.toml
@@ -6,7 +6,7 @@ authors = ["pierre <pierre.krieger1708@gmail.com>"]
 [dependencies]
 bigint = "4.2"
 bytes = "0.4"
-env_logger = "0.5.3"
+env_logger = "0.5.4"
 futures = "0.1"
 multiaddr = "0.2"
 multiplex = { path = "../multiplex-rs" }
diff --git a/example/examples/echo-dialer.rs b/example/examples/echo-dialer.rs
index 5b119893..d490e7d1 100644
--- a/example/examples/echo-dialer.rs
+++ b/example/examples/echo-dialer.rs
@@ -19,6 +19,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 extern crate bytes;
+extern crate env_logger;
 extern crate futures;
 extern crate libp2p_secio as secio;
 extern crate libp2p_swarm as swarm;
@@ -39,6 +40,8 @@ use tokio_io::codec::BytesCodec;
 use websocket::WsConfig;
 
 fn main() {
+    env_logger::init();
+
     // Determine which address to dial.
     let target_addr = env::args()
         .nth(1)
diff --git a/example/examples/echo-server.rs b/example/examples/echo-server.rs
index c80087a7..5055e2c8 100644
--- a/example/examples/echo-server.rs
+++ b/example/examples/echo-server.rs
@@ -19,6 +19,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 extern crate bytes;
+extern crate env_logger;
 extern crate futures;
 extern crate libp2p_secio as secio;
 extern crate libp2p_swarm as swarm;
@@ -39,6 +40,8 @@ use tokio_io::codec::BytesCodec;
 use websocket::WsConfig;
 
 fn main() {
+    env_logger::init();
+
     // Determine which address to listen to.
     let listen_addr = env::args()
         .nth(1)
diff --git a/example/examples/ping-client.rs b/example/examples/ping-client.rs
index d5abbbed..e3c98ad3 100644
--- a/example/examples/ping-client.rs
+++ b/example/examples/ping-client.rs
@@ -19,6 +19,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 extern crate bytes;
+extern crate env_logger;
 extern crate futures;
 extern crate libp2p_ping as ping;
 extern crate libp2p_secio as secio;
@@ -36,6 +37,8 @@ use tcp::TcpConfig;
 use tokio_core::reactor::Core;
 
 fn main() {
+    env_logger::init();
+
     // Determine which address to dial.
     let target_addr = env::args()
         .nth(1)