diff --git a/examples/add/src/lib.rs b/examples/add/src/lib.rs
index d8c7633a..ad4ffde3 100644
--- a/examples/add/src/lib.rs
+++ b/examples/add/src/lib.rs
@@ -1,5 +1,3 @@
-extern crate wasm_bindgen;
-
 use wasm_bindgen::prelude::*;
 
 #[wasm_bindgen]
diff --git a/examples/canvas/src/lib.rs b/examples/canvas/src/lib.rs
index 9d03a478..d18337b7 100644
--- a/examples/canvas/src/lib.rs
+++ b/examples/canvas/src/lib.rs
@@ -1,10 +1,7 @@
-extern crate js_sys;
-extern crate wasm_bindgen;
-extern crate web_sys;
-
 use std::f64;
 use wasm_bindgen::prelude::*;
 use wasm_bindgen::JsCast;
+use web_sys;
 
 #[wasm_bindgen(start)]
 pub fn start() {
diff --git a/examples/char/src/lib.rs b/examples/char/src/lib.rs
index 0d108df9..41b5edc0 100644
--- a/examples/char/src/lib.rs
+++ b/examples/char/src/lib.rs
@@ -1,5 +1,3 @@
-extern crate wasm_bindgen;
-
 use wasm_bindgen::prelude::*;
 
 // lifted from the `console_log` example
diff --git a/examples/hello_world/src/lib.rs b/examples/hello_world/src/lib.rs
index 3a3634b9..f2e774f8 100644
--- a/examples/hello_world/src/lib.rs
+++ b/examples/hello_world/src/lib.rs
@@ -1,5 +1,3 @@
-extern crate wasm_bindgen;
-
 use wasm_bindgen::prelude::*;
 
 #[wasm_bindgen]