diff --git a/scripts/async.rn b/scripts/async.rn
index ad7713f40..d9c491bcb 100644
--- a/scripts/async.rn
+++ b/scripts/async.rn
@@ -2,7 +2,7 @@ struct Timeout;
 
 async fn test(timeout, helpful_hint) {
     let request = http::get(`http://httpstat.us/200?sleep=${timeout}`);
-    let timeout = time::delay_for(time::Duration::from_secs(2));
+    let timeout = time::sleep(time::Duration::from_secs(2));
 
     let result = select {
         _ = timeout => Err(Timeout),
diff --git a/scripts/book/async/async_http_concurrent.rn b/scripts/book/async/async_http_concurrent.rn
index ef54bab62..9f07fad9a 100644
--- a/scripts/book/async/async_http_concurrent.rn
+++ b/scripts/book/async/async_http_concurrent.rn
@@ -4,7 +4,7 @@ struct Timeout;
 
 async fn request(timeout) {
     let request = http::get(`http://httpstat.us/200?sleep=${timeout}`);
-    let timeout = time::delay_for(time::Duration::from_secs(2));
+    let timeout = time::sleep(time::Duration::from_secs(2));
 
     let result = select {
         _ = timeout => Err(Timeout),
diff --git a/scripts/book/async/async_http_timeout.rn b/scripts/book/async/async_http_timeout.rn
index 99eeddee8..f00f5439a 100644
--- a/scripts/book/async/async_http_timeout.rn
+++ b/scripts/book/async/async_http_timeout.rn
@@ -2,7 +2,7 @@ struct Timeout;
 
 async fn request(timeout) {
     let request = http::get(`http://httpstat.us/200?sleep=${timeout}`);
-    let timeout = time::delay_for(time::Duration::from_secs(2));
+    let timeout = time::sleep(time::Duration::from_secs(2));
 
     let result = select {
         _ = timeout => Err(Timeout),
diff --git a/scripts/book/loops/loop_forever.rn b/scripts/book/loops/loop_forever.rn
index d2746c8e3..ea6f650bd 100644
--- a/scripts/book/loops/loop_forever.rn
+++ b/scripts/book/loops/loop_forever.rn
@@ -3,6 +3,6 @@ use time::Duration;
 pub async fn main() {
     loop {
         println("Hello forever!");
-        time::delay_for(Duration::from_secs(1)).await;
+        time::sleep(Duration::from_secs(1)).await;
     }
 }