diff --git a/Cargo.toml b/Cargo.toml
index bd737d6..1cee089 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,7 +28,7 @@ version = "0.2.0-alpha.4"
 authors = ["John-John Tedro <udoprog@tedro.se>"]
 # Generic associated types were stabilized in 1.65.
 rust-version = "1.65"
-edition = "2018"
+edition = "2021"
 documentation = "https://docs.rs/audio"
 homepage = "https://github.com/udoprog/audio"
 repository = "https://github.com/udoprog/audio"
diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index 8083f3f..ce5a310 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -2,7 +2,7 @@
 name = "examples"
 version = "0.0.0"
 authors = ["John-John Tedro <udoprog@tedro.se>"]
-edition = "2018"
+edition.workspace = true
 publish = false
 
 [dependencies]
diff --git a/generate/Cargo.toml b/generate/Cargo.toml
index 1a3af39..8323afd 100644
--- a/generate/Cargo.toml
+++ b/generate/Cargo.toml
@@ -2,7 +2,7 @@
 name = "generate"
 version = "0.0.0"
 authors = ["John-John Tedro <udoprog@tedro.se>"]
-edition = "2018"
+edition.workspace = true
 publish = false
 
 [dependencies]
diff --git a/ste/src/lib.rs b/ste/src/lib.rs
index 8c3c34b..b402216 100644
--- a/ste/src/lib.rs
+++ b/ste/src/lib.rs
@@ -342,6 +342,7 @@ impl Thread {
             move |tag| {
                 if let Some(task) = task.take() {
                     let _ = panic::catch_unwind(panic::AssertUnwindSafe(|| {
+                        let _ = &storage;
                         let output = with_tag(tag, task);
 
                         // Safety: we're the only one with access to this pointer,
@@ -632,6 +633,7 @@ impl Builder {
         let handle = thread::Builder::new()
             .name(String::from("ste-thread"))
             .spawn(move || {
+                let _ = &shared2;
                 let RawSend(shared) = shared2;
 
                 #[cfg(feature = "tokio")]
diff --git a/ste/src/wait_future.rs b/ste/src/wait_future.rs
index 475b237..75e4251 100644
--- a/ste/src/wait_future.rs
+++ b/ste/src/wait_future.rs
@@ -72,6 +72,7 @@ where
     use std::panic;
 
     move |tag| {
+        let _ = (&waker, &future, &complete);
         unsafe {
             // Safety: At this point, we know the waker has been
             // replaced by the polling task and can safely deref it into
@@ -82,6 +83,7 @@ where
             let future = Pin::new_unchecked(future.0.as_mut());
 
             let result = panic::catch_unwind(panic::AssertUnwindSafe(|| {
+                let _ = &output;
                 if let Poll::Ready(ready) = with_tag(tag, || future.poll(&mut cx)) {
                     *output.0.as_mut() = Some(ready);
                 }