diff --git a/.github/workflows/oxipng.yml b/.github/workflows/oxipng.yml
index 8ba376ac..e653b658 100644
--- a/.github/workflows/oxipng.yml
+++ b/.github/workflows/oxipng.yml
@@ -161,7 +161,7 @@ jobs:
       - name: Install MSRV Rust toolchain
         uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          toolchain: 1.74.0
+          toolchain: 1.85.1
           cache-bin: false
           cache-shared-key: cache
 
diff --git a/Cargo.toml b/Cargo.toml
index 387508b0..6f6d8826 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ categories = ["command-line-utilities", "compression"]
 description = "A lossless PNG compression optimizer"
 keywords = ["png", "image-compression", "optimization", "multi-threading", "lossless"]
 documentation = "https://docs.rs/oxipng"
-edition = "2021"
+edition = "2024"
 exclude = [
   ".editorconfig",
   ".gitattributes",
@@ -21,7 +21,7 @@ license = "MIT"
 name = "oxipng"
 repository = "https://github.com/oxipng/oxipng"
 version = "9.1.5"
-rust-version = "1.74.0"
+rust-version = "1.85.1"
 
 [badges]
 travis-ci = { repository = "oxipng/oxipng", branch = "master" }
diff --git a/Dockerfile b/Dockerfile
index c8e27bab..fc5a2fd2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 # check=error=true
 FROM --platform=$BUILDPLATFORM tonistiigi/xx AS xx
 
-FROM --platform=$BUILDPLATFORM rust:1.74-alpine AS base
+FROM --platform=$BUILDPLATFORM rust:1.85.1-alpine AS base
 
 RUN apk update && \
     apk add \
diff --git a/README.md b/README.md
index 10b855ce..9c41e644 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ cargo build --release
 cp target/release/oxipng /usr/local/bin
 ```
 
-The current minimum supported Rust version is **1.74.0**.
+The current minimum supported Rust version is **1.85.1**.
 
 Oxipng follows Semantic Versioning.
 
diff --git a/benches/zopfli.rs b/benches/zopfli.rs
index 912782fe..345a71ab 100644
--- a/benches/zopfli.rs
+++ b/benches/zopfli.rs
@@ -8,8 +8,7 @@ use std::{num::NonZeroU8, path::PathBuf};
 use oxipng::{internal_tests::*, *};
 use test::Bencher;
 
-// SAFETY: trivially safe. Stopgap solution until const unwrap is stabilized.
-const DEFAULT_ZOPFLI_ITERATIONS: NonZeroU8 = unsafe { NonZeroU8::new_unchecked(15) };
+const DEFAULT_ZOPFLI_ITERATIONS: NonZeroU8 = NonZeroU8::new(15).unwrap();
 
 #[bench]
 fn zopfli_16_bits_strategy_0(b: &mut Bencher) {
diff --git a/src/apng.rs b/src/apng.rs
index 8b99d0f1..b2817e1e 100644
--- a/src/apng.rs
+++ b/src/apng.rs
@@ -1,9 +1,9 @@
 use std::io::Write;
 
 use crate::{
+    PngResult,
     error::PngError,
     headers::{read_be_u16, read_be_u32},
-    PngResult,
 };
 
 #[derive(Debug, Clone)]
diff --git a/src/atomicmin.rs b/src/atomicmin.rs
index 57303e6d..e01163f4 100644
--- a/src/atomicmin.rs
+++ b/src/atomicmin.rs
@@ -15,11 +15,7 @@ impl AtomicMin {
 
     pub fn get(&self) -> Option<usize> {
         let val = self.val.load(SeqCst);
-        if val == usize::MAX {
-            None
-        } else {
-            Some(val)
-        }
+        if val == usize::MAX { None } else { Some(val) }
     }
 
     /// Try a new value, returning true if it is the new minimum
diff --git a/src/cli.rs b/src/cli.rs
index 2d6f729a..800da204 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -1,6 +1,6 @@
 use std::path::PathBuf;
 
-use clap::{value_parser, Arg, ArgAction, Command};
+use clap::{Arg, ArgAction, Command, value_parser};
 
 include!("display_chunks.rs");
 
diff --git a/src/evaluate.rs b/src/evaluate.rs
index f15aaed9..af6c4070 100644
--- a/src/evaluate.rs
+++ b/src/evaluate.rs
@@ -4,12 +4,12 @@
 #[cfg(not(feature = "parallel"))]
 use std::cell::RefCell;
 use std::sync::{
-    atomic::{AtomicUsize, Ordering::*},
     Arc,
+    atomic::{AtomicUsize, Ordering::*},
 };
 
 #[cfg(feature = "parallel")]
-use crossbeam_channel::{unbounded, Receiver, Sender};
+use crossbeam_channel::{Receiver, Sender, unbounded};
 use deflate::Deflaters;
 use indexmap::IndexSet;
 use log::trace;
@@ -17,7 +17,7 @@ use rayon::prelude::*;
 
 #[cfg(not(feature = "parallel"))]
 use crate::rayon;
-use crate::{atomicmin::AtomicMin, deflate, filters::RowFilter, png::PngImage, Deadline, PngError};
+use crate::{Deadline, PngError, atomicmin::AtomicMin, deflate, filters::RowFilter, png::PngImage};
 
 pub(crate) struct Candidate {
     pub image: Arc<PngImage>,
@@ -30,7 +30,7 @@ pub(crate) struct Candidate {
 }
 
 impl Candidate {
-    fn cmp_key(&self) -> impl Ord {
+    fn cmp_key(&self) -> impl Ord + use<> {
         (
             self.estimated_output_size,
             self.image.data.len(),
@@ -161,10 +161,7 @@ impl Evaluator {
                     best_candidate_size.set_min(estimated_output_size);
                     trace!(
                         "Eval: {}-bit {:23} {:8}   {} bytes",
-                        image.ihdr.bit_depth,
-                        description,
-                        filter,
-                        estimated_output_size
+                        image.ihdr.bit_depth, description, filter, estimated_output_size
                     );
 
                     #[cfg(feature = "parallel")]
@@ -182,10 +179,7 @@ impl Evaluator {
                 } else if let Err(PngError::DeflatedDataTooLong(size)) = idat_data {
                     trace!(
                         "Eval: {}-bit {:23} {:8}  >{} bytes",
-                        image.ihdr.bit_depth,
-                        description,
-                        filter,
-                        size
+                        image.ihdr.bit_depth, description, filter, size
                     );
                 }
             });
diff --git a/src/headers.rs b/src/headers.rs
index 21786d4d..db48f15b 100644
--- a/src/headers.rs
+++ b/src/headers.rs
@@ -3,12 +3,12 @@ use log::{debug, trace, warn};
 use rgb::{RGB16, RGBA8};
 
 use crate::{
+    Deflaters, Options, PngResult,
     colors::{BitDepth, ColorType},
     deflate::{crc32, inflate},
     display_chunks::DISPLAY_CHUNKS,
     error::PngError,
     interlace::Interlacing,
-    Deflaters, Options, PngResult,
 };
 
 #[derive(Debug, Clone)]
diff --git a/src/interlace.rs b/src/interlace.rs
index 07af3b1e..7b4f2f5e 100644
--- a/src/interlace.rs
+++ b/src/interlace.rs
@@ -2,7 +2,7 @@ use std::{fmt, fmt::Display};
 
 use bitvec::prelude::*;
 
-use crate::{headers::IhdrData, png::PngImage, PngError};
+use crate::{PngError, headers::IhdrData, png::PngImage};
 
 /// Whether to enable progressive rendering. See [`Options`][crate::Options])
 #[repr(u8)]
diff --git a/src/lib.rs b/src/lib.rs
index c3d6dba0..1af2e8e3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -27,16 +27,16 @@ mod rayon;
 
 use std::{
     fs::{File, Metadata},
-    io::{stdin, stdout, BufWriter, Read, Write},
+    io::{BufWriter, Read, Write, stdin, stdout},
     path::Path,
     sync::{
-        atomic::{AtomicBool, Ordering},
         Arc,
+        atomic::{AtomicBool, Ordering},
     },
     time::{Duration, Instant},
 };
 
-pub use indexmap::{indexset, IndexSet};
+pub use indexmap::{IndexSet, indexset};
 use log::{debug, info, trace, warn};
 use rayon::prelude::*;
 pub use rgb::{RGB16, RGBA8};
@@ -232,9 +232,9 @@ pub fn optimize(input: &InFile, output: &OutFile, opts: &Options) -> PngResult<(
 
     if is_fully_optimized(in_data.len(), optimized_output.len(), opts) {
         match (output, input) {
-            // if p is None, it also means same as the input path
-            (OutFile::Path { path, .. }, InFile::Path(ref input_path))
-                if path.as_ref().map_or(true, |p| p == input_path) =>
+            // If output path is None, it also means same as the input path
+            (OutFile::Path { path, .. }, InFile::Path(input_path))
+                if path.as_ref().is_none_or(|p| p == input_path) =>
             {
                 info!("{input}: Could not optimize further, no change written");
                 return Ok(());
@@ -396,7 +396,9 @@ fn optimize_png(
     }
 
     if opts.interlace == Some(Interlacing::Adam7) && png.raw.ihdr.interlaced != Interlacing::Adam7 {
-        warn!("Interlacing was not enabled as it would result in a larger file. To override this, use `--force`.");
+        warn!(
+            "Interlacing was not enabled as it would result in a larger file. To override this, use `--force`."
+        );
     }
 
     #[cfg(feature = "sanity-checks")]
@@ -471,7 +473,7 @@ fn optimize_raw(
     };
 
     if result.data_is_compressed
-        && max_size.map_or(true, |max_size| result.estimated_output_size < max_size)
+        && max_size.is_none_or(|max_size| result.estimated_output_size < max_size)
     {
         debug!("Found better result:");
         debug!("    {}, f = {}", deflater, result.filter);
diff --git a/src/main.rs b/src/main.rs
index 52623a7d..12794f44 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -25,7 +25,7 @@ use std::{
 use clap::ArgMatches;
 mod cli;
 use indexmap::IndexSet;
-use log::{error, warn, Level, LevelFilter};
+use log::{Level, LevelFilter, error, warn};
 use oxipng::{Deflaters, InFile, Options, OutFile, PngError, RowFilter, StripChunks};
 use rayon::prelude::*;
 
diff --git a/src/options.rs b/src/options.rs
index b7ff717e..60353f82 100644
--- a/src/options.rs
+++ b/src/options.rs
@@ -4,7 +4,7 @@ use std::{
     time::Duration,
 };
 
-use indexmap::{indexset, IndexSet};
+use indexmap::{IndexSet, indexset};
 use log::warn;
 
 use crate::{deflate::Deflaters, filters::RowFilter, headers::StripChunks, interlace::Interlacing};
diff --git a/src/png/mod.rs b/src/png/mod.rs
index a872107a..66ba002d 100644
--- a/src/png/mod.rs
+++ b/src/png/mod.rs
@@ -12,14 +12,14 @@ use rgb::ComponentSlice;
 use rustc_hash::FxHashMap;
 
 use crate::{
+    Options,
     apng::*,
     colors::{BitDepth, ColorType},
     deflate,
     error::PngError,
     filters::*,
     headers::*,
-    interlace::{deinterlace_image, interlace_image, Interlacing},
-    Options,
+    interlace::{Interlacing, deinterlace_image, interlace_image},
 };
 
 pub(crate) mod scan_lines;
diff --git a/src/reduction/color.rs b/src/reduction/color.rs
index ddf40234..0d1dde81 100644
--- a/src/reduction/color.rs
+++ b/src/reduction/color.rs
@@ -1,7 +1,7 @@
 use std::hash::{BuildHasherDefault, Hash};
 
 use indexmap::IndexSet;
-use rgb::{alt::Gray, ComponentMap, ComponentSlice, FromSlice, RGB, RGBA};
+use rgb::{ComponentMap, ComponentSlice, FromSlice, RGB, RGBA, alt::Gray};
 use rustc_hash::FxHasher;
 
 use crate::{
diff --git a/src/reduction/mod.rs b/src/reduction/mod.rs
index dc6202a1..132ae802 100644
--- a/src/reduction/mod.rs
+++ b/src/reduction/mod.rs
@@ -1,6 +1,6 @@
 use std::sync::Arc;
 
-use crate::{evaluate::Evaluator, png::PngImage, ColorType, Deadline, Deflaters, Options};
+use crate::{ColorType, Deadline, Deflaters, Options, evaluate::Evaluator, png::PngImage};
 
 pub mod alpha;
 use crate::alpha::*;
@@ -183,7 +183,7 @@ pub(crate) fn perform_reductions(
         if (!cheap || reduced.is_none()) && !deadline.passed() {
             if let Some(indexed) = indexed.and_then(|png| reduced_bit_depth_8_or_less(&png)) {
                 // Only evaluate this if it's different from the first result (which must be grayscale if it exists)
-                if reduced.as_ref().map_or(true, |r| r.data != indexed.data) {
+                if reduced.as_ref().is_none_or(|r| r.data != indexed.data) {
                     eval.try_image(Arc::new(indexed));
                     evaluation_added = true;
                 }
diff --git a/src/reduction/palette.rs b/src/reduction/palette.rs
index b694b228..0d07d986 100644
--- a/src/reduction/palette.rs
+++ b/src/reduction/palette.rs
@@ -2,10 +2,10 @@ use indexmap::IndexSet;
 use rgb::RGBA8;
 
 use crate::{
+    Interlacing,
     colors::{BitDepth, ColorType},
     headers::IhdrData,
-    png::{scan_lines::ScanLine, PngImage},
-    Interlacing,
+    png::{PngImage, scan_lines::ScanLine},
 };
 
 /// Attempt to reduce the number of colors in the palette, returning the reduced image if successful
diff --git a/tests/flags.rs b/tests/flags.rs
index ed4770cf..1ecffe63 100644
--- a/tests/flags.rs
+++ b/tests/flags.rs
@@ -99,11 +99,11 @@ fn test_it_converts(
 fn verbose_mode() {
     use std::cell::RefCell;
     #[cfg(not(feature = "parallel"))]
-    use std::sync::mpsc::{channel as unbounded, Sender};
+    use std::sync::mpsc::{Sender, channel as unbounded};
 
     #[cfg(feature = "parallel")]
-    use crossbeam_channel::{unbounded, Sender};
-    use log::{set_logger, set_max_level, Level, LevelFilter, Log, Metadata, Record};
+    use crossbeam_channel::{Sender, unbounded};
+    use log::{Level, LevelFilter, Log, Metadata, Record, set_logger, set_max_level};
 
     // Rust runs tests in parallel by default.
     // We want to make sure that we verify only logs from our test.