diff --git a/example-build/src/main.rs b/example-build/src/main.rs
index 349e50cd..817bb0a7 100644
--- a/example-build/src/main.rs
+++ b/example-build/src/main.rs
@@ -1,4 +1,6 @@
-// Copyright 2022 Oxide Computer Company
+// Copyright 2025 Oxide Computer Company
+
+#![allow(clippy::derivable_impls)]
 
 // Include the generated code.
 include!(concat!(env!("OUT_DIR"), "/codegen.rs"));
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index aaba1588..65c0d610 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.85.0"
+channel = "1.89.0"
 profile = "default"
diff --git a/typify-impl/src/lib.rs b/typify-impl/src/lib.rs
index d4b12545..85ac42f0 100644
--- a/typify-impl/src/lib.rs
+++ b/typify-impl/src/lib.rs
@@ -794,7 +794,7 @@ impl TypeSpace {
     }
 
     /// Get a type given its ID.
-    pub fn get_type(&self, type_id: &TypeId) -> Result<Type> {
+    pub fn get_type(&self, type_id: &TypeId) -> Result<Type<'_>> {
         let type_entry = self.id_to_entry.get(type_id).ok_or(Error::InvalidTypeId)?;
         Ok(Type {
             type_space: self,
@@ -824,7 +824,7 @@ impl TypeSpace {
 
     /// Iterate over all types including those defined in this [TypeSpace] and
     /// those referred to by those types.
-    pub fn iter_types(&self) -> impl Iterator<Item = Type> {
+    pub fn iter_types(&self) -> impl Iterator<Item = Type<'_>> {
         self.id_to_entry.values().map(move |type_entry| Type {
             type_space: self,
             type_entry,
@@ -1033,7 +1033,7 @@ impl Type<'_> {
     }
 
     /// Get details about the type.
-    pub fn details(&self) -> TypeDetails {
+    pub fn details(&self) -> TypeDetails<'_> {
         match &self.type_entry.details {
             // Named user-defined types
             TypeEntryDetails::Enum(details) => TypeDetails::Enum(TypeEnum { details }),
diff --git a/typify-test/src/main.rs b/typify-test/src/main.rs
index ad366c98..3ae1bc88 100644
--- a/typify-test/src/main.rs
+++ b/typify-test/src/main.rs
@@ -1,4 +1,4 @@
-// Copyright 2022 Oxide Computer Company
+// Copyright 2025 Oxide Computer Company
 
 // Include the generated code to make sure it compiles.
 include!(concat!(env!("OUT_DIR"), "/codegen.rs"));
@@ -57,6 +57,8 @@ fn test_unknown_format() {
 }
 
 mod hashmap {
+    #![allow(dead_code)]
+
     include!(concat!(env!("OUT_DIR"), "/codegen_hashmap.rs"));
 
     #[test]
@@ -69,6 +71,8 @@ mod hashmap {
 }
 
 mod custom_map {
+    #![allow(dead_code)]
+
     #[allow(private_interfaces)]
     #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
     pub struct CustomMap<K, V> {