diff --git a/Cargo.toml b/Cargo.toml
index 982330d..5174f10 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "misanthropic"
-version = "0.4.1"
+version = "0.4.2"
 edition = "2021"
 authors = ["Michael de Gans <michael.john.degans@gmail.com>"]
 description = "An async, ergonomic, client for Anthropic's Messages API"
@@ -86,7 +86,7 @@ rustls-tls = ["reqwest/rustls-tls"]
 # converting to CommonMark.
 markdown = ["dep:pulldown-cmark", "dep:pulldown-cmark-to-cmark"]
 # Derive PartialEq for all structs and enums.
-partialeq = []
+partial_eq = []
 # Input and output sanitization
 langsan = ["dep:langsan"]
 
diff --git a/src/lib.rs b/src/lib.rs
index 45dd16b..5b6a927 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
+#![deny(warnings)]
 #![warn(missing_docs)]
 //! `misanthropic` is a crate providing ergonomic access to the [Anthropic
 //! Messages API].
diff --git a/src/model.rs b/src/model.rs
index 94ce7ab..8d8965a 100644
--- a/src/model.rs
+++ b/src/model.rs
@@ -16,18 +16,32 @@ use serde::{Deserialize, Serialize};
 )]
 #[serde(rename_all = "snake_case")]
 pub enum Model {
-    /// Sonnet 3.5.
-    #[serde(rename = "claude-3-5-sonnet-20240620")]
+    /// Sonnet 3.5 (latest)
+    #[serde(rename = "claude-3-5-sonnet-latest")]
     Sonnet35,
-    /// Opus 3.0.
-    #[serde(rename = "claude-3-opus-20240229")]
+    /// Sonnet 3.5 2024-06-20
+    #[serde(rename = "claude-3-5-sonnet-20240620")]
+    Sonnet35_20240620,
+    /// Sonnet 3.0 2024-10-22
+    #[serde(rename = "claude-3-sonnet-20241022")]
+    Sonnet30_20241022,
+    /// Opus 3.0 (latest)
+    #[serde(rename = "claude-3-opus-latest")]
     Opus30,
+    /// Opus 3.0 2024-02-29
+    #[serde(rename = "claude-3-opus-20240229")]
+    Opus30_20240229,
     /// Sonnet 3.0
     #[cfg(not(feature = "prompt-caching"))]
     #[serde(rename = "claude-3-sonnet-20240229")]
     Sonnet30,
-    /// Haiku 3.0. This is the default model.
+    /// Haiku 3.0 (latest) This is the default model.
     #[default]
+    // The `latest` alias is not enabled yet, but (very likely) will be in the
+    // future. If not we will manually update this.
     #[serde(rename = "claude-3-haiku-20240307")]
     Haiku30,
+    /// Haiku 3.0 2024-03-07
+    #[serde(rename = "claude-3-haiku-20240307")]
+    Haiku30_20240307,
 }
diff --git a/src/response.rs b/src/response.rs
index 8f6bee1..6f0bf61 100644
--- a/src/response.rs
+++ b/src/response.rs
@@ -119,8 +119,6 @@ impl<'a> Response<'a> {
 mod tests {
     use super::*;
 
-    use std::borrow::Cow;
-
     const TEST_ID: &str = "test_id";
 
     const CONTENT: &str = "Hello, world!";
diff --git a/src/response/message.rs b/src/response/message.rs
index eaf412f..718ae21 100644
--- a/src/response/message.rs
+++ b/src/response/message.rs
@@ -141,7 +141,7 @@ mod tests {
         let message: Message = serde_json::from_str(RESPONSE_JSON).unwrap();
         assert_eq!(message.message.content.len(), 1);
         assert_eq!(message.id, "msg_013Zva2CMHLNnXjNJJKqJ2EF");
-        assert_eq!(message.model, crate::Model::Sonnet35);
+        assert_eq!(message.model, crate::Model::Sonnet35_20240620);
         assert!(matches!(message.stop_reason, Some(StopReason::EndTurn)));
         assert_eq!(message.stop_sequence, None);
         assert_eq!(message.usage.input_tokens, 2095);