diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index 5f50f4b..e8fa0fd 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -17,11 +17,12 @@ rustdoc-args = ["--document-private-items"]
 default = []
 # Disables any tests that are not compatible or not intended to run under Miri
 miri = []
-__tokio = ["tokio"]
+std = []
+__tokio = ["tokio", "std"]
 
 [dependencies]
 ouroboros = { version = "0.15.7", path = "../ouroboros" }
-tokio = { version = "1.25.0", features = [ "macros", "rt" ], optional = true }
+tokio = { version = "1.27.0", features = [ "macros", "rt" ], optional = true }
 
 [dev-dependencies]
 rustversion = "1.0.11"
diff --git a/examples/src/lib.rs b/examples/src/lib.rs
index 2ed201e..3198651 100644
--- a/examples/src/lib.rs
+++ b/examples/src/lib.rs
@@ -1,4 +1,5 @@
-#![no_std]
+#![cfg_attr(not(feature = "std"), no_std)]
+
 extern crate alloc;
 use alloc::boxed::Box;
 
diff --git a/examples/src/ok_tests.rs b/examples/src/ok_tests.rs
index 2a4affd..61ae346 100644
--- a/examples/src/ok_tests.rs
+++ b/examples/src/ok_tests.rs
@@ -94,6 +94,7 @@ fn box_and_ref() {
 #[cfg(all(not(feature = "miri"), feature = "tokio"))]
 #[tokio::test]
 async fn async_new() {
+    use std::future::Future;
     let bar = BoxAndRefAsyncBuilder {
         data: 12,
         dref_builder: |data| Box::pin(async move { data }),