diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 971b030..df174fc 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -24,15 +24,14 @@ jobs:
 
       - name: Install package and test dependencies
         run: |
-          python -m pip install pytest numpy
-          python -m pip install -e .
+          python -m pip install -e ".[test]"
 
       - name: Run tests
         run: python -m pytest tests/
 
       - name: Install benchmark dependencies
         run: |
-          python -m pip install matplotlib zstandard
+          python -m pip install ".[benchmark]"
 
       - name: Run benchmarks
         run: |
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 73d768d..c5b8fe9 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -11,7 +11,7 @@ jobs:
       matrix:
         # os: [ubuntu-latest, windows-latest, macos-latest]
         os: [ubuntu-latest, macos-latest]
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
       - uses: actions/checkout@v4
@@ -23,9 +23,7 @@ jobs:
 
       - name: Install test dependencies
         run: |
-          python -m pip install pytest numpy
-          python -m pip install scikit-build-core pybind11 cmake
-          python -m pip install -e .
+          python -m pip install -e ".[test]"
 
       - name: Run tests
         run: python -m pytest tests/
@@ -49,25 +47,15 @@ jobs:
 
       - name: Install build dependencies
         run: |
-          python -m pip install cibuildwheel cmake
+          python -m pip install cibuildwheel
 
       - name: Build wheels
         run: python -m cibuildwheel --output-dir dist
-        env:
-          CIBW_BUILD: cp38-* cp39-* cp310-* cp311-* cp312-* cp313-* pp38-* pp39-* pp310-*
-          CIBW_ARCHS_LINUX: x86_64 i686
-          # CIBW_ARCHS_WINDOWS: AMD64 x86
-          CIBW_ARCHS_MACOS: x86_64 arm64
-          CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
-          CIBW_MANYLINUX_I686_IMAGE: manylinux2014
-          CIBW_BEFORE_BUILD: pip install scikit-build-core pybind11 cmake
 
       - name: Build sdist
         run: |
-          pip install setuptools
-          python setup.py sdist --formats=gztar
-        env:
-          CIBW_BEFORE_BUILD: pip install pybind11 cmake
+          pip install build
+          python -m build -s -o dist
 
       - name: Upload wheels as artifacts
         uses: actions/upload-artifact@v3
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0177ca5..32277eb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,8 @@
-cmake_minimum_required(VERSION 3.14)
-project(simple_ans VERSION 0.1.0 LANGUAGES CXX)
+cmake_minimum_required(VERSION 3.15)
+project(simple_ans LANGUAGES CXX)
 
-set(CMAKE_CXX_RELEASE_FLAGS "-O3 -march=native")
+set(ARCH_FLAGS "-march=native" CACHE STRING "Architecture flags for the compiler")
+set(CMAKE_CXX_FLAGS_RELEASE "-O3 ${ARCH_FLAGS}")
 
 include(CheckIPOSupported)
 check_ipo_supported(RESULT ipo_supported OUTPUT ipo_error)
@@ -61,18 +62,4 @@ endif()
 
 
 # Install rules
-include(GNUInstallDirs)
-install(TARGETS _simple_ans
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-)
-install(FILES ${HEADERS}
-    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/simple_ans
-)
-
-# For editable installs, copy the extension module to the source directory
-add_custom_command(TARGET _simple_ans POST_BUILD
-    COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:_simple_ans> ${CMAKE_SOURCE_DIR}/simple_ans/
-    COMMENT "Copying extension module to source directory for editable install"
-)
+install(TARGETS _simple_ans LIBRARY DESTINATION simple_ans)
diff --git a/README.md b/README.md
index dc82d5d..e1d1e90 100644
--- a/README.md
+++ b/README.md
@@ -15,23 +15,25 @@ While there are certainly many ANS implementations that are parts of other packa
 
 ## Installation
 
-First, install the required dependencies:
+simple_ans is available on PyPI:
 
-```bash
-pip install pybind11 numpy
+```console
+pip install simple-ans
 ```
 
-Then install the package:
+Developers may want to clone the repository and do an editable install:
 
-```bash
-pip install .
+```console
+git clone https://github.com/flatironinstitute/simple_ans.git
+cd simple_ans
+pip install -e .
 ```
 
-Or install from source:
+For developers who want automatic rebuilds of the compiled extension:
 
-```bash
-cd simple_ans
-pip install -e .
+```console
+pip install "scikit-build-core>=0.5.0" "pybind11>=2.11.1" "pip>=24" ninja
+pip install -e . -Ceditable.rebuild=true --no-build-isolation
 ```
 
 ## Usage
@@ -64,6 +66,14 @@ compression_ratio = original_size / compressed_size
 print(f"Compression ratio: {compression_ratio:.2f}x")
 ```
 
+## Tests
+To run the tests, install with the `test` extra and run `pytest`:
+
+```console
+pip install "simple-ans[test]"
+pytest tests/
+```
+
 ## Simple benchmark
 
 You can run a very simple benchmark that compares simple_ans with `zlib`, `zstandard`, and `lzma` at various compression levels for a toy dataset of quantized Gaussian noise. See [devel/benchmark.py](./devel/benchmark.py) and [devel/benchmark_ans_only.py](./devel/benchmark_ans_only.py).
@@ -74,6 +84,12 @@ The benchmark.py also runs in a CI environment and produces the following graph:
 
 We see that for this example, the ANS-based compression ratio is higher than the other methods, almost reaching the theoretical ideal. The encode rate in MB/s is also fastest for simple_ans. The decode rate is faster than Zlib but slower than Zstandard. I think in principle, we should be able to speed up the decoding. Let me know if you have ideas for this.
 
+To install the benchmark dependencies, use:
+
+```console
+pip install .[benchmark]
+```
+
 ## Extended benchmarks
 
 A more comprehensive benchmark ([devel/benchmark2.py](./devel/benchmark2.py)) tests the compression performance across different types of distributions:
diff --git a/pyproject.toml b/pyproject.toml
index 75b059c..3363e41 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,28 +16,43 @@ classifiers = [
     "Intended Audience :: Developers",
     "License :: OSI Approved :: Apache Software License",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Scientific/Engineering",
 ]
 dependencies = [
     "numpy>=1.21.0",
 ]
 
+[project.optional-dependencies]
+test = ["pytest"]
+benchmark = ["matplotlib", "zstandard"]
+
 [tool.scikit-build]
-cmake.minimum-version = "3.15"
+cmake.version = ">=3.15"
 cmake.args = []
-cmake.verbose = true
+build.verbose = true
 sdist.include = ["simple_ans/cpp/*"]
 wheel.packages = ["simple_ans"]
 build-dir = "build"
 editable.mode = "redirect"
 
-[tool.setuptools]
-packages = ["simple_ans"]
-
 [tool.scikit-build.cmake.define]
-SKBUILD = "ON"
 CMAKE_POSITION_INDEPENDENT_CODE = "ON"
+
+[tool.cibuildwheel]
+build-frontend = "build"
+build = "cp39-* cp310-* cp311-* cp312-* cp313-* pp39-* pp310-*"
+manylinux-x86_64-image = "manylinux2014"
+test-command = "python -m pytest {project}/tests"
+test-extras = ["test"]
+config-settings = "cmake.define.ARCH_FLAGS=''"
+
+[tool.cibuildwheel.linux]
+archs = ["x86_64"]
+
+[tool.cibuildwheel.macos]
+archs = ["x86_64", "arm64"]
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 0a861b6..0000000
--- a/setup.py
+++ /dev/null
@@ -1,9 +0,0 @@
-"""
-This setup.py is kept for backwards compatibility with pip install -e.
-The actual build configuration is in pyproject.toml and CMakeLists.txt.
-"""
-
-from setuptools import setup
-
-if __name__ == "__main__":
-    setup()