diff --git a/src/accel/bvh4.rs b/src/accel/bvh4.rs
index d87d22c..1a90f3a 100644
--- a/src/accel/bvh4.rs
+++ b/src/accel/bvh4.rs
@@ -64,7 +64,7 @@ impl<'a> BVH4<'a> {
     where
         F: 'b + Fn(&T) -> &'b [BBox],
     {
-        if objects.len() == 0 {
+        if objects.is_empty() {
             BVH4 {
                 root: None,
                 depth: 0,
@@ -116,8 +116,8 @@ impl<'a> BVH4<'a> {
         let mut stack_ptr = 1;
 
         while stack_ptr > 0 {
-            match node_stack[stack_ptr] {
-                &BVH4Node::Internal {
+            match *node_stack[stack_ptr] {
+                BVH4Node::Internal {
                     bounds,
                     children,
                     traversal_code,
@@ -143,7 +143,7 @@ impl<'a> BVH4<'a> {
                                     rays.max_t(ray_idx),
                                 )
                             };
-                            all_hits = all_hits | hits;
+                            all_hits |= hits;
                             hits
                         }
                     });
@@ -168,7 +168,7 @@ impl<'a> BVH4<'a> {
                     }
                 }
 
-                &BVH4Node::Leaf { object_range } => {
+                BVH4Node::Leaf { object_range } => {
                     // Do the ray tests.
                     obj_ray_test(object_range.0..object_range.1, rays, ray_stack);
 
@@ -191,12 +191,12 @@ impl<'a> BVH4<'a> {
     ) -> usize {
         let mut node_count = 0;
 
-        match node {
+        match *node {
             // Create internal node
-            &BVHBaseNode::Internal {
-                bounds_range: _,
+            BVHBaseNode::Internal {
                 children_indices,
                 split_axis,
+                ..
             } => {
                 let child_l = &base.nodes[children_indices.0];
                 let child_r = &base.nodes[children_indices.1];
@@ -274,7 +274,7 @@ impl<'a> BVH4<'a> {
                     let bounds_len = children
                         .iter()
                         .map(|c| {
-                            if let &Some(n) = c {
+                            if let Some(n) = *c {
                                 let len = n.bounds_range().1 - n.bounds_range().0;
                                 debug_assert!(len >= 1);
                                 len
@@ -345,7 +345,7 @@ impl<'a> BVH4<'a> {
             }
 
             // Create internal node
-            &BVHBaseNode::Leaf { object_range, .. } => {
+            BVHBaseNode::Leaf { object_range, .. } => {
                 unsafe {
                     *fill_node.as_mut_ptr() = BVH4Node::Leaf {
                         object_range: object_range,
diff --git a/src/bbox4.rs b/src/bbox4.rs
index 07cb456..7f80023 100644
--- a/src/bbox4.rs
+++ b/src/bbox4.rs
@@ -11,7 +11,7 @@ use crate::{
 
 use glam::{Vec4, Vec4Mask};
 
-const BBOX_MAXT_ADJUST: f32 = 1.00000024;
+const BBOX_MAXT_ADJUST: f32 = 1.000_000_24;
 
 /// A SIMD set of 4 3D axis-aligned bounding boxes.
 #[derive(Debug, Copy, Clone)]
diff --git a/src/color.rs b/src/color.rs
index 891a465..178e47c 100644
--- a/src/color.rs
+++ b/src/color.rs
@@ -337,8 +337,8 @@ impl Lerp for Color {
 
 fn plancks_law(temperature: f32, wavelength: f32) -> f32 {
     const C: f32 = 299_792_458.0; // Speed of light
-    const H: f32 = 6.62607015e-34; // Planck constant
-    const KB: f32 = 1.38064852e-23; // Boltzmann constant
+    const H: f32 = 6.626_070_15e-34; // Planck constant
+    const KB: f32 = 1.380_648_52e-23; // Boltzmann constant
 
     // At 400 kelvin and below, the spectrum is black anyway,
     // but the equations become numerically unstable somewhere
diff --git a/src/main.rs b/src/main.rs
index f469e98..1d77988 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,6 +10,7 @@
 #![allow(clippy::cast_lossless)]
 #![allow(clippy::needless_range_loop)]
 #![allow(clippy::excessive_precision)]
+#![allow(clippy::transmute_ptr_to_ptr)]
 
 extern crate lazy_static;
 
@@ -57,7 +58,7 @@ use crate::{
 
 const VERSION: &str = env!("CARGO_PKG_VERSION");
 
-#[allow(clippy::cyclomatic_complexity)]
+#[allow(clippy::cognitive_complexity)]
 fn main() {
     let mut t = Timer::new();
 
diff --git a/src/parse/psy.rs b/src/parse/psy.rs
index c2d3210..7dded61 100644
--- a/src/parse/psy.rs
+++ b/src/parse/psy.rs
@@ -580,7 +580,7 @@ pub fn make_transform_format_error(byte_offset: usize) -> PsyParseError {
 }
 
 pub fn parse_color(contents: &str) -> Result<Color, PsyParseError> {
-    let items: Vec<_> = contents.split(",").map(|s| s.trim()).collect();
+    let items: Vec<_> = contents.split(',').map(|s| s.trim()).collect();
     if items.len() != 2 {
         return Err(PsyParseError::UnknownError(0));
     }
diff --git a/sub_crates/mem_arena/src/lib.rs b/sub_crates/mem_arena/src/lib.rs
index a92db46..6890181 100644
--- a/sub_crates/mem_arena/src/lib.rs
+++ b/sub_crates/mem_arena/src/lib.rs
@@ -1,6 +1,7 @@
 #![allow(clippy::redundant_field_names)]
 #![allow(clippy::needless_return)]
 #![allow(clippy::mut_from_ref)]
+#![allow(clippy::transmute_ptr_to_ptr)]
 
 use std::{
     cell::{Cell, RefCell},
diff --git a/sub_crates/spectral_upsampling/src/jakob.rs b/sub_crates/spectral_upsampling/src/jakob.rs
index 8a15156..b33f619 100644
--- a/sub_crates/spectral_upsampling/src/jakob.rs
+++ b/sub_crates/spectral_upsampling/src/jakob.rs
@@ -51,6 +51,7 @@ pub fn aces_to_spectrum_p4(lambdas: Vec4, rgb: (f32, f32, f32)) -> Vec4 {
 // Core functions, specialized above for specific color spaces.
 
 #[inline(always)]
+#[allow(clippy::many_single_char_names)]
 fn small_rgb_to_spectrum_p4(
     table: &[[(f32, f32, f32); 2]],
     table_res: usize,
diff --git a/sub_crates/spectral_upsampling/src/lib.rs b/sub_crates/spectral_upsampling/src/lib.rs
index e45217f..93f0d6f 100644
--- a/sub_crates/spectral_upsampling/src/lib.rs
+++ b/sub_crates/spectral_upsampling/src/lib.rs
@@ -2,7 +2,7 @@
 // clippy warnings that stem from the C code.
 #![allow(clippy::needless_return)]
 #![allow(clippy::useless_let_if_seq)]
-#![allow(clippy::cyclomatic_complexity)]
+#![allow(clippy::cognitive_complexity)]
 
 pub mod jakob;
 pub mod meng;
diff --git a/sub_crates/spectral_upsampling/src/meng.rs b/sub_crates/spectral_upsampling/src/meng.rs
index bc14eb2..953940e 100644
--- a/sub_crates/spectral_upsampling/src/meng.rs
+++ b/sub_crates/spectral_upsampling/src/meng.rs
@@ -2,7 +2,7 @@
 // clippy warnings that stem from the C code.
 #![allow(clippy::needless_return)]
 #![allow(clippy::useless_let_if_seq)]
-#![allow(clippy::cyclomatic_complexity)]
+#![allow(clippy::cognitive_complexity)]
 
 use std::f32;
 
diff --git a/sub_crates/trifloat/src/signed48.rs b/sub_crates/trifloat/src/signed48.rs
index 24f4437..5dd99bf 100644
--- a/sub_crates/trifloat/src/signed48.rs
+++ b/sub_crates/trifloat/src/signed48.rs
@@ -13,6 +13,8 @@
 //! All integers in the range `[-8192, 8192]` can be represented exactly in the
 //! largest value.
 
+#![allow(clippy::cast_lossless)]
+
 use crate::{fiddle_exp2, fiddle_log2};
 
 /// Largest representable number.
@@ -27,6 +29,7 @@ pub const MIN: f32 = -274_844_352_512.0;
 /// Smallest representable positive number.
 ///
 /// This is the number with the smallest possible magnitude (aside from zero).
+#[allow(clippy::excessive_precision)]
 pub const MIN_POSITIVE: f32 = 0.000_000_000_003_637_978_807_091_713;
 
 /// Difference between 1.0 and the next largest representable number.