diff --git a/examples/cdn/cache/Cargo.lock b/examples/cdn/cache/Cargo.lock
index ab7f542..7ed5ca9 100644
--- a/examples/cdn/cache/Cargo.lock
+++ b/examples/cdn/cache/Cargo.lock
@@ -44,7 +44,9 @@ checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
 [[package]]
 name = "fastedge"
-version = "0.4.2"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38f99ccc6ecc029bcc8d2cf008f11647f8cea8eddccbab9e1489bfaac54bb0fd"
 dependencies = [
  "bytes",
  "fastedge-derive",
@@ -56,7 +58,9 @@ dependencies = [
 
 [[package]]
 name = "fastedge-derive"
-version = "0.4.2"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f4015884a15f36df9997409528e11be4e030708495fbfb4ccd662aaf6bd166fc"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/examples/cdn/cache/Cargo.toml b/examples/cdn/cache/Cargo.toml
index 880c44e..d4b96a2 100644
--- a/examples/cdn/cache/Cargo.toml
+++ b/examples/cdn/cache/Cargo.toml
@@ -10,6 +10,6 @@ crate-type = ["cdylib"]
 
 [dependencies]
 proxy-wasm = "0.2"
-fastedge = { path = "../../..", features = ["proxywasm"] }
+fastedge = { version = "0.4", features = ["proxywasm"] }
 querystring = "1.1"
 serde_json = "1"
diff --git a/src/lib.rs b/src/lib.rs
index 1487853..896c836 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -180,8 +180,8 @@
 //!     // Get a secret value
 //!     match secret::get("API_KEY")? {
 //!         Some(api_key) => {
-//!             // Use the API key
-//!             let key = String::from_utf8_lossy(&api_key);
+//!             // Use the API key (a String)
+//!             let _key: String = api_key;
 //!             Response::builder()
 //!                 .status(StatusCode::OK)
 //!                 .body(Body::from("Secret retrieved"))
@@ -222,7 +222,7 @@
 //!     let content = b"<h1>Hello</h1>".to_vec();
 //!
 //!     // Store it for 60 seconds
-//!     cache::set(key, content.clone(), Some(60_000))?;
+//!     cache::set(key, &content, Some(60_000))?;
 //!
 //!     Response::builder()
 //!         .status(StatusCode::OK)
@@ -306,8 +306,8 @@ pub mod dictionary {
 /// // Get current secret value
 /// match secret::get("DATABASE_PASSWORD")? {
 ///     Some(password) => {
-///         let pwd = String::from_utf8_lossy(&password);
-///         // Use the password to connect to database
+///         // `password` is a String; use it to connect to the database
+///         let _pwd: String = password;
 ///     }
 ///     None => {
 ///         eprintln!("Secret not found");
@@ -446,10 +446,10 @@ pub mod key_value {
 /// use fastedge::cache;
 ///
 /// // Store with a 5-minute TTL
-/// cache::set("session:abc123", b"user-data".to_vec(), Some(300_000))?;
+/// cache::set("session:abc123", b"user-data", Some(300_000))?;
 ///
 /// // Store with no expiry
-/// cache::set("config:flags", b"enabled".to_vec(), None)?;
+/// cache::set("config:flags", b"enabled", None)?;
 /// # Ok::<(), Box<dyn std::error::Error>>(())
 /// ```
 ///
diff --git a/wit b/wit
index 217ec2f..68c713f 160000
--- a/wit
+++ b/wit
@@ -1 +1 @@
-Subproject commit 217ec2fcf6f3dca5c96702a5afb705ef94aa655f
+Subproject commit 68c713f2f8aaa14c8964978a6e98d54571281065