diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 7ef78e0..0e220f5 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-20.04, macOS-12, windows-2019 ]
-        python-version: [ '3.9', 'pypy3.9', '3.10', '3.11', '3.12' ]
+        python-version: [ '3.10', 'pypy3.10', '3.11', '3.12', '3.13' ]
       fail-fast: false
 
     name: Python version - ${{ matrix.python-version }} - ${{ matrix.os }}
@@ -49,12 +49,13 @@ jobs:
         env:
           BUILD_WITH_COVERAGE: true
         run: |
-          cythonize polyagamma/*.pyx -X linetrace=${{ contains(fromJSON('["3.12", "pypy3.9"]'), matrix.python-version) && 'False' || 'True' }}
+          cythonize polyagamma/*.pyx -X linetrace=${{ contains(fromJSON('["pypy3.10"]'), matrix.python-version) && 'False' || 'True' }}
           python3 -m pip install -e .
           pytest -v --cov-branch --cov=polyagamma tests/ --cov-report=xml
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
+          token: ${{ secrets.CODECOV_TOKEN }}
           files: ./coverage.xml
           fail_ci_if_error: false
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 913b225..c1a707f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -35,7 +35,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.9'
+          python-version: '3.10'
 
       - name: Cythonize C-extensions
         run: |
@@ -44,7 +44,7 @@ jobs:
           cythonize polyagamma/*.pyx
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.19.2
+        uses: pypa/cibuildwheel@v2.21.3
         with:
           package-dir: .
           output-dir: wheelhouse
diff --git a/pyproject.toml b/pyproject.toml
index 6fa9092..084f0d6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,16 +3,9 @@ requires = [
     "wheel",
     "setuptools>=61.0.0",
     "setuptools-scm",
-    # Here we build the project using the earliest numpy version supported  by
-    # the used version of python. This does not affect required numpy version at
-    # installation time; `project.dependencies` is most relevant for required numpy
-    # when installtng at user level.
-    "numpy==2.0.0; python_version=='3.12' and platform_python_implementation!='PyPy'",
-    "numpy==2.0.0; python_version=='3.11' and platform_python_implementation!='PyPy'",
-    "numpy==2.0.0; python_version=='3.10' and platform_python_implementation!='PyPy'",
-    "numpy==2.0.0; python_version=='3.9' and platform_python_implementation!='PyPy'",
+    "numpy==2.1.3; python_version>='3.10' and platform_python_implementation!='PyPy'",
     # PyPy specific requirements
-    "numpy==2.0.0; python_version=='3.9' and platform_python_implementation=='PyPy'",
+    "numpy==2.1.3; python_version=='3.10' and platform_python_implementation=='PyPy'",
 ]
 build-backend = "setuptools.build_meta"
 
@@ -25,7 +18,7 @@ authors = [
 description = "Efficiently generate samples from the Polya-Gamma distribution using a NumPy/SciPy compatible interface."
 readme = "README.md"
 dynamic = ["version"]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = ["numpy >= 1.19.0"]
 license = {text = "BSD 3-Clause License"}
 keywords = ['polya-gamma distribution', 'polya-gamma random sampling']
diff --git a/requirements-dev.txt b/requirements-dev.txt
index d921df4..c2ea27f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,6 @@
-cython==3.0.*
-numpy==2.0.0
-pre-commit==3.4.0
-pytest==7.4.0
-pytest-cov==4.1.0
-setuptools==70.3.0
+cython==3.0.11
+numpy==2.1.3
+pre-commit==4.0.1
+pytest==8.3.3
+pytest-cov==6.0.0
+setuptools==75.3.0