diff --git a/.github/workflows/codecov_lints.yml b/.github/workflows/codecov_lints.yml
new file mode 100644
index 0000000..b5c3294
--- /dev/null
+++ b/.github/workflows/codecov_lints.yml
@@ -0,0 +1,35 @@
+name: Code coverage report
+
+# no permissions by default
+permissions: {}
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+      with:
+        persist-credentials: false
+
+    - name: Set up Python
+      uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97  # v7.0.0
+      with:
+        python-version: "3.x"
+
+    - name: Install gsw
+      run: >
+        python -m pip install --group dev
+        && python -m pip install -e .
+
+    - name: Run tests with coverage
+      run: |
+        python -m pytest -s -rxs -v --cov=gsw gsw/tests
+
+    - name: Run linters
+      run: >
+        prek run --all-files
diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index 0c90a37..1108fe6 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -33,7 +33,7 @@ jobs:
 
     - name: Install gsw
       run: >
-        python -m pip install -r requirements-dev.txt
+        python -m pip install --group dev
         && python -m pip install -e .
 
     - name: Build documentation
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
deleted file mode 100644
index b3d5a09..0000000
--- a/.github/workflows/pre-commit.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-name: pre-commit
-
-on:
-  pull_request:
-  push:
-    branches: [main]
-
-jobs:
-  pre-commit:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
-      with:
-        fetch-depth: 0
-        persist-credentials: false
-    - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97  # v7.0.0
-    - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd  # v3.0.1
-    permissions:
-      actions: none
\ No newline at end of file
diff --git a/.github/workflows/test_code_generation.yml b/.github/workflows/test_code_generation.yml
index d6cbe3d..9613dc1 100644
--- a/.github/workflows/test_code_generation.yml
+++ b/.github/workflows/test_code_generation.yml
@@ -24,14 +24,10 @@ jobs:
       with:
         python-version: "3.x"
 
-    - name: Install gsw
-      run: >
-        python -m pip install -r requirements-dev.txt
-        && python -m pip install -e .
-
     - name: Test Code Generation
       run: >
-        git clone https://github.com/TEOS-10/GSW-C.git ../GSW-C
+        python -m pip install --group dev
+        && git clone https://github.com/TEOS-10/GSW-C.git ../GSW-C
         && git clone https://github.com/TEOS-10/GSW-Matlab.git ../GSW-Matlab
         && python tools/copy_from_GSW-C.py
         && python tools/mat2npz.py
@@ -41,7 +37,7 @@ jobs:
 
     - name: Install gsw
       run: >
-        python -m pip install -v -e  . --no-deps --no-build-isolation --force-reinstall
+        python -m pip install -e .
         && python -m pytest -s -rxs -v gsw/tests
     permissions:
       actions: none
\ No newline at end of file
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8c79f23..dd49e4a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: [ "3.11", "3.12", "3.13", "3.14" ]
+        python-version: [ "3.11", "3.15-dev" ]
         os: [ windows-latest, ubuntu-latest, macos-latest ]
       fail-fast: false
 
@@ -31,9 +31,8 @@ jobs:
 
     - name: Install gsw
       run: >
-        python -m pip install -r requirements-dev.txt
+        python -m pip install --group dev
         && python -m pip install -e .
-        && python -m pip install numpy${{ matrix.numpy-version }}
 
     - name: Tests
       run: |
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 374492c..c368686 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -20,13 +20,13 @@ repos:
         - --ignore-words-list=nin,preformed,wih,pres,
 
 - repo: https://github.com/tox-dev/pyproject-fmt
-  rev: v2.29.3
+  rev: v2.29.4
   hooks:
     - id: pyproject-fmt
 
 
 - repo: https://github.com/charliermarsh/ruff-pre-commit
-  rev: v0.16.6
+  rev: v0.16.7
   hooks:
     - id: ruff
 
diff --git a/pyproject.toml b/pyproject.toml
index c189098..589f017 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,6 +21,7 @@ classifiers = [
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
   "Topic :: Scientific/Engineering",
 ]
 dynamic = [
@@ -30,6 +31,20 @@ dynamic = [
 dependencies = [
   "numpy>=2",
 ]
+
+[dependency-groups]
+dev = [
+  "dask",
+  "numpydoc",
+  "pandas>=2",
+  "prek",
+  "pytest",
+  "pytest-cov",
+  "scipy",
+  "sphinx",
+  "sphinx-rtd-theme",
+  "xarray",
+]
 urls.documentation = "https://teos-10.github.io/GSW-Python/"
 urls.homepage = "https://www.teos-10.org/"
 urls.repository = "https://github.com/TEOS-10/GSW-python"
diff --git a/requirements-dev.txt b/requirements-dev.txt
deleted file mode 100644
index 7b8d47a..0000000
--- a/requirements-dev.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-dask
-numpydoc
-pandas>=2
-pytest
-scipy
-setuptools_scm
-sphinx
-sphinx_rtd_theme
-xarray
\ No newline at end of file