diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe5e3e7..c2b4ff1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,7 +22,7 @@ This release has an [MSRV] of 1.74.
 
 ### Changed
 
-...
+- Breaking: Mark `Format` as `#[non_exhaustive]` ([#XXX][] by [@DJMcNab][])
 
 ### Fixed
 
diff --git a/Cargo.toml b/Cargo.toml
index 3b12e5d..f07dfa8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -78,34 +78,38 @@ rust.missing_debug_implementations = "warn"
 rust.unused_qualifications = "warn"
 rust.single_use_lifetimes = "warn"
 
-# clippy.exhaustive_enums = "warn"
-# clippy.dbg_macro = "warn"
-# clippy.match_same_arms = "warn"
+clippy.dbg_macro = "warn"
+clippy.match_same_arms = "warn"
 # clippy.cast_possible_truncation = "warn"
-# clippy.missing_assert_message = "warn"
-# clippy.return_self_not_must_use = "warn"
-# clippy.wildcard_imports = "warn"
-# rust.elided_lifetimes_in_paths = "warn"
+clippy.missing_assert_message = "warn"
+clippy.return_self_not_must_use = "warn"
+clippy.wildcard_imports = "warn"
+rust.elided_lifetimes_in_paths = "warn"
 # clippy.use_self = "warn"
 
 # Aspirational lints, not enabled for one reason or another
 
-rust.missing_docs = "warn"     # We have many as-yet undocumented items
-rust.unreachable_pub = "warn"  # Potentially controversial code style
-rust.unnameable_types = "warn" # Requires lint_reasons rustc feature for exceptions
-# clippy.todo = "warn" # We have a lot of "real" todos
-# clippy.missing_errors_doc = "warn" # Can be quite noisy?
-# clippy.missing_panics_doc = "warn" # Can be quite noisy?
-# clippy.partial_pub_fields = "warn" # Potentially controversial code style
-# clippy.shadow_unrelated = "warn" # Potentially controversial code style
+rust.missing_docs = "warn"
+rust.unreachable_pub = "warn"
+rust.unnameable_types = "warn"
+clippy.todo = "warn"
+clippy.missing_errors_doc = "warn"
+clippy.missing_panics_doc = "warn"
+clippy.partial_pub_fields = "warn"
+clippy.shadow_unrelated = "warn"
 
 # This catches duplicated dependencies in the tree, which we don't have much control over
 # We should use cargo deny for this, anyway
-# clippy.cargo = "warn"
+clippy.cargo = { level = "warn", priority = -1 }
+
+# Lints which we set in `lib.rs`, instead of at a package level.
 
-# Lints which we still set in individual crates lib.rs
 # False positives with example targets - https://github.com/rust-lang/rust/issues/57274
 # rust.unused_crate_dependencies = "warn"
 # Examples often do want to print
 # clippy.print_stdout = "warn" # Note that this is allowed in Masonry
 # clippy.print_stderr = "warn" # Note that this is allowed in Masonry
+
+# Explicit per-crate exceptions
+# Should be manually checked occasionally. Most enums are correctly exhaustive, as this is a vocabulary crate.
+# clippy.exhaustive_enums = "warn"
diff --git a/src/blob.rs b/src/blob.rs
index c82ce72..b6ff34c 100644
--- a/src/blob.rs
+++ b/src/blob.rs
@@ -44,7 +44,7 @@ where
 }
 
 impl<T> fmt::Debug for Blob<T> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.debug_struct("Blob")
             .field("id", &self.id)
             .finish_non_exhaustive()
diff --git a/src/color.rs b/src/color.rs
index 18aaa9c..9559f52 100644
--- a/src/color.rs
+++ b/src/color.rs
@@ -85,8 +85,7 @@ impl Color {
     #[allow(clippy::many_single_char_names)]
     #[allow(clippy::unreadable_literal)]
     #[must_use]
-    pub fn hlca(h: f64, l: f64, c: f64, a: f64) -> Color {
-        let alpha = a;
+    pub fn hlca(h: f64, l: f64, c: f64, alpha: f64) -> Color {
         // The reverse transformation from Lab to XYZ, see
         // https://en.wikipedia.org/wiki/CIELAB_color_space
         fn f_inv(t: f64) -> f64 {
diff --git a/src/image.rs b/src/image.rs
index b9100df..51468c1 100644
--- a/src/image.rs
+++ b/src/image.rs
@@ -10,6 +10,7 @@ use super::{Blob, Extend};
 /// Defines the pixel format of an [image](Image).
 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[non_exhaustive]
 pub enum Format {
     /// 32-bit RGBA with 8-bit channels.
     Rgba8,