- bump dependencies

- bump git action versions

.github/workflows/publish.yml

@@ -27,10 +27,10 @@ jobs:
           - runner: ubuntu-latest
             target: ppc64le
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
         with:
-          python-version: '3.10'
+          python-version: '3.13'
       - name: Build wheels
         uses: PyO3/maturin-action@v1
         with:
@@ -39,7 +39,7 @@ jobs:
           sccache: 'true'
           manylinux: auto
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: wheels-linux-${{ matrix.platform.target }}
           path: dist
@@ -55,10 +55,10 @@ jobs:
 #          - runner: windows-latest
 #            target: x86
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
         with:
-          python-version: '3.10'
+          python-version: '3.13'
           architecture: ${{ matrix.platform.target }}
       - name: Build wheels
         uses: PyO3/maturin-action@v1
@@ -67,7 +67,7 @@ jobs:
           args: --release --out dist
           sccache: 'true'
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: wheels-windows-${{ matrix.platform.target }}
           path: dist
@@ -83,10 +83,10 @@ jobs:
           - runner: macos-14
             target: aarch64
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
         with:
-          python-version: '3.10'
+          python-version: '3.13'
       - name: Build wheels
         uses: PyO3/maturin-action@v1
         with:
@@ -94,7 +94,7 @@ jobs:
           args: --release --out dist
           sccache: 'true'
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: wheels-macos-${{ matrix.platform.target }}
           path: dist
@@ -103,14 +103,14 @@ jobs:
     needs: [ publish_pytest ]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Build sdist
         uses: PyO3/maturin-action@v1
         with:
           command: sdist
           args: --out dist
       - name: Upload sdist
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: wheels-sdist
           path: dist
@@ -120,7 +120,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [linux, windows, macos, sdist]
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v7
       - name: Publish to PyPI
         uses: PyO3/maturin-action@v1
         env:
@@ -135,12 +135,12 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 25
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
 
       - name: cargo-release Cache
         id: cargo_release_cache
-        uses: actions/cache@v3
+        uses: actions/cache@v5
         with:
           path: ~/.cargo/bin/cargo-release
           key: ${{ runner.os }}-cargo-release

.github/workflows/pytest.yml

@@ -7,13 +7,13 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ["3.10", "3.12"]
+        python-version: ["3.10", "3.12", "3.13"]
         os: [ubuntu-latest, windows-latest, macOS-latest]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "tiffwrite"
-version = "2025.9.1"
+version = "2025.12.0"
 edition = "2024"
 rust-version = "1.85.1"
 authors = ["Wim Pomp <w.pomp@nki.nl>"]
@@ -18,20 +18,20 @@ name = "tiffwrite"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-colorcet = "0.2.1"
-colorgrad = "0.7.2"
-chrono = "0.4.41"
-css-color = "0.2.8"
-flate2 = "1.1.1"
-ndarray = "0.16.1"
-num = "0.4.3"
-numpy = { version = "0.25.0", optional = true }
-rayon = "1.10.0"
-thiserror = "2.0.16"
-zstd = "0.13.3"
+colorcet = "0.2"
+colorgrad = "0.8"
+chrono = "0.4"
+css-color = "0.2"
+flate2 = "1"
+ndarray = "0.17"
+num = "0.4"
+numpy = { version = "0.27", optional = true }
+rayon = "1"
+thiserror = "2"
+zstd = "0.13"
 
 [dependencies.pyo3]
-version = "0.25.1"
+version = "0.27"
 features = ["extension-module", "abi3-py310", "generate-import-lib", "anyhow", "multiple-pymethods"]
 optional = true
 

src/error.rs

@@ -1,14 +1,13 @@
 use thiserror::Error;
 
-
 #[derive(Debug, Error)]
 pub enum Error {
-    #[error("io error: {0}")]
+    #[error(transparent)]
     IO(#[from] std::io::Error),
+    #[error(transparent)]
+    ColorCet(#[from] colorcet::ColorcetError),
     #[error("could not parse color: {0}")]
     ColorParse(String),
-    #[error("colorcet error: {0}")]
-    ColorCet(#[from] colorcet::ColorcetError),
     #[error("could not covert ColorMap into LinearGradient")]
-    Conversion
+    Conversion,
 }

src/lib.rs

@@ -1,7 +1,8 @@
+pub mod error;
 #[cfg(feature = "python")]
 mod py;
-pub mod error;
 
+use crate::error::Error;
 use chrono::Utc;
 use colorcet::ColorMap;
 use colorgrad::{Gradient, LinearGradient};
@@ -23,7 +24,6 @@ use std::{
 };
 use zstd::zstd_safe::CompressionLevel;
 use zstd::{DEFAULT_COMPRESSION_LEVEL, stream::Encoder};
-use crate::error::Error;
 
 const TAG_SIZE: usize = 20;
 const OFFSET_SIZE: usize = 8;
@@ -60,7 +60,11 @@ impl IFD {
         }
     }
 
-    fn write(&mut self, ijtifffile: &mut IJTiffFile, where_to_write_offset: u64) -> Result<u64, Error> {
+    fn write(
+        &mut self,
+        ijtifffile: &mut IJTiffFile,
+        where_to_write_offset: u64,
+    ) -> Result<u64, Error> {
         let mut tags = self.tags.drain().collect::<Vec<_>>();
         tags.sort();
         ijtifffile.file.seek(SeekFrom::End(0))?;
@@ -748,7 +752,10 @@ impl IJTiffFile {
     /// set colormap from named colormap (see [colorcet](https://crates.io/crates/colorcet))
     pub fn set_colormap<S: AsRef<str>>(&mut self, name: S) -> Result<(), Error> {
         let name = name.as_ref();
-        let colormap: LinearGradient = name.parse::<ColorMap>()?.try_into().map_err(|_| Error::Conversion)?;
+        let colormap: LinearGradient = name
+            .parse::<ColorMap>()?
+            .try_into()
+            .map_err(|_| Error::Conversion)?;
         let mut colormap = colormap
             .colors(256)
             .into_iter()
@@ -896,7 +903,13 @@ impl IJTiffFile {
         Ok(())
     }
 
-    fn write_frame(&mut self, frame: CompressedFrame, c: usize, z: usize, t: usize) -> Result<(), Error> {
+    fn write_frame(
+        &mut self,
+        frame: CompressedFrame,
+        c: usize,
+        z: usize,
+        t: usize,
+    ) -> Result<(), Error> {
         let mut offsets = Vec::new();
         let mut bytecounts = Vec::new();
         for tile in frame.bytes {

src/py.rs

@@ -1,6 +1,6 @@
 use crate::{Colors, Compression, IJTiffFile, Tag};
 use num::{Complex, FromPrimitive, Rational32};
-use numpy::PyReadonlyArray2;
+use numpy::{AllowTypeChange, PyArrayLike2};
 use pyo3::exceptions::PyValueError;
 use pyo3::prelude::*;
 
@@ -338,7 +338,7 @@ macro_rules! impl_save {
         impl PyIJTiffFile {
             fn $t(
                 &mut self,
-                frame: PyReadonlyArray2<$T>,
+                frame: PyArrayLike2<$T, AllowTypeChange>,
                 c: usize,
                 t: usize,
                 z: usize,