diff --git a/.github/workflows/big_endian.yml b/.github/workflows/big_endian.yml
deleted file mode 100644
index 2460cd17..00000000
--- a/.github/workflows/big_endian.yml
+++ /dev/null
@@ -1,147 +0,0 @@
-name: Big-Endian Architecture Tests
-
-on:
-  pull_request:
-    branches:
-      - main
-    paths:
-      - "quaddtype/**"
-      - ".github/workflows/**"
-  workflow_dispatch:
-
-defaults:
-  run:
-    shell: bash
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
-permissions:
-  contents: read
-
-jobs:
-  big_endian_tests:
-    runs-on: ubuntu-24.04
-    continue-on-error: true
-    strategy:
-      fail-fast: false
-      matrix:
-        BUILD_PROP:
-          - [
-              "s390x (IBM Z Big Endian)",
-              "s390x-linux-gnu",
-              "s390x/ubuntu:24.04",
-              "s390x",
-            ]
-          - [
-              "s390x - baseline(Z13)",
-              "s390x-linux-gnu",
-              "s390x/ubuntu:24.04",
-              "s390x",
-            ]
-    env:
-      ARCH_NAME: ${{ matrix.BUILD_PROP[0] }}
-      TOOLCHAIN_NAME: ${{ matrix.BUILD_PROP[1] }}
-      DOCKER_CONTAINER: ${{ matrix.BUILD_PROP[2] }}
-      ARCH: ${{ matrix.BUILD_PROP[3] }}
-      TERM: xterm-256color
-
-    name: "${{ matrix.BUILD_PROP[0] }}"
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          submodules: recursive
-          fetch-tags: true
-          persist-credentials: false
-
-      - name: Initialize binfmt_misc for qemu-user-static
-        run: |
-          # Enable QEMU user-mode emulation for cross-architecture execution
-          docker run --rm --privileged tonistiigi/binfmt:qemu-v9.2.2-52 --install all
-
-      - name: Install cross-compilation toolchain
-        run: |
-          sudo apt update
-          sudo apt install -y ninja-build gcc-${TOOLCHAIN_NAME} g++-${TOOLCHAIN_NAME} gfortran-${TOOLCHAIN_NAME}
-
-      - name: Cache docker container
-        uses: actions/cache@v5
-        id: container-cache
-        with:
-          path: ~/docker_${{ matrix.BUILD_PROP[1] }}
-          key: container-quaddtype-${{ runner.os }}-${{ matrix.BUILD_PROP[1] }}-${{ matrix.BUILD_PROP[2] }}-${{ hashFiles('quaddtype/pyproject.toml') }}
-
-      - name: Create cross-compilation container
-        if: steps.container-cache.outputs.cache-hit != 'true'
-        run: |
-          docker run --platform=linux/${ARCH} --name quaddtype_container --interactive \
-            -v /:/host -v $(pwd):/workspace ${DOCKER_CONTAINER} /bin/bash -c "
-            # Update package manager and install essential tools
-            apt update &&
-            apt install -y cmake git python3 python-is-python3 python3-dev python3-pip build-essential &&
-            
-            # Create necessary symlinks for cross-compilation
-            mkdir -p /lib64 && ln -sf /host/lib64/ld-* /lib64/ || true &&
-            ln -sf /host/lib/x86_64-linux-gnu /lib/x86_64-linux-gnu || true &&
-            
-            # Link cross-compilation toolchain from host
-            rm -rf /usr/${TOOLCHAIN_NAME} && ln -sf /host/usr/${TOOLCHAIN_NAME} /usr/${TOOLCHAIN_NAME} &&
-            rm -rf /usr/lib/gcc/${TOOLCHAIN_NAME} && ln -sf /host/usr/lib/gcc-cross/${TOOLCHAIN_NAME} /usr/lib/gcc/${TOOLCHAIN_NAME} &&
-            
-            # Set up compiler symlinks
-            rm -f /usr/bin/gcc && ln -sf /host/usr/bin/${TOOLCHAIN_NAME}-gcc /usr/bin/gcc &&
-            rm -f /usr/bin/g++ && ln -sf /host/usr/bin/${TOOLCHAIN_NAME}-g++ /usr/bin/g++ &&
-            rm -f /usr/bin/gfortran && ln -sf /host/usr/bin/${TOOLCHAIN_NAME}-gfortran /usr/bin/gfortran &&
-            
-            # Set up binutils
-            rm -f /usr/bin/ar && ln -sf /host/usr/bin/${TOOLCHAIN_NAME}-ar /usr/bin/ar &&
-            rm -f /usr/bin/as && ln -sf /host/usr/bin/${TOOLCHAIN_NAME}-as /usr/bin/as &&
-            rm -f /usr/bin/ld && ln -sf /host/usr/bin/${TOOLCHAIN_NAME}-ld /usr/bin/ld &&
-            rm -f /usr/bin/ld.bfd && ln -sf /host/usr/bin/${TOOLCHAIN_NAME}-ld.bfd /usr/bin/ld.bfd &&
-            
-            # Link build tools
-            rm -f /usr/bin/ninja && ln -sf /host/usr/bin/ninja /usr/bin/ninja &&
-            rm -f /usr/local/bin/ninja && mkdir -p /usr/local/bin && ln -sf /host/usr/bin/ninja /usr/local/bin/ninja &&
-            
-            # Configure git for workspace access
-            git config --global --add safe.directory /workspace &&
-            
-            # Install Python build dependencies (using --break-system-packages for Ubuntu 24.04)
-            python -m pip install --break-system-packages meson>=1.3.2 meson-python wheel ninja cython &&
-            echo \"Building NumPy from source (main branch)...\" &&
-            python -m pip install --break-system-packages git+https://github.com/numpy/numpy.git@main &&
-            python -c \"import numpy; print('NumPy version:', numpy.__version__)\" &&
-            python -m pip install --break-system-packages pytest pytest-run-parallel pytest-timeout &&
-            
-            # Install system dependencies for quaddtype (SLEEF dependencies)
-            apt install -y libssl-dev libfftw3-dev pkg-config
-          "
-          docker commit quaddtype_container quaddtype_container
-          mkdir -p "~/docker_${TOOLCHAIN_NAME}"
-          docker save -o "~/docker_${TOOLCHAIN_NAME}/quaddtype_container.tar" quaddtype_container
-
-      - name: Load container from cache
-        if: steps.container-cache.outputs.cache-hit == 'true'
-        run: docker load -i "~/docker_${TOOLCHAIN_NAME}/quaddtype_container.tar"
-
-      - name: Build quaddtype with cross-compilation and testing
-        run: |
-          docker run --rm --platform=linux/${ARCH} -e "TERM=xterm-256color" \
-            -v $(pwd):/workspace -v /:/host quaddtype_container \
-            /bin/script -e -q -c "/bin/bash --noprofile --norc -eo pipefail -c '
-              cd /workspace/quaddtype &&
-              echo \"Building quaddtype for ${ARCH_NAME}...\" &&
-              
-              # Set OpenMP linking for cross-compilation
-              export LDFLAGS=\"-fopenmp\" &&
-              
-              # Install quaddtype without dependencies (NumPy already installed from source)
-              python -m pip install --break-system-packages --no-deps . -v --no-build-isolation --force-reinstall &&
-              
-              # Install test dependencies separately
-              python -m pip install --break-system-packages pytest pytest-run-parallel pytest-timeout mpmath &&
-              
-              cd ..
-              python -m pytest -vvv --color=yes --timeout=600 --tb=short quaddtype/tests/
-            '"
diff --git a/.github/workflows/build_docs.yml b/.github/workflows/build_docs.yml
deleted file mode 100644
index 80d803db..00000000
--- a/.github/workflows/build_docs.yml
+++ /dev/null
@@ -1,43 +0,0 @@
-name: Build Docs
-
-on:
-  push:
-    branches:
-      - main
-  workflow_dispatch:  # Make sure this job can be triggered manually
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      pages: write
-      id-token: write
-    steps:
-      - uses: actions/checkout@v6
-      - uses: actions/configure-pages@v5
-      - uses: actions/setup-python@v6
-        with:
-          python-version: '3.13'
-      - name: Install dependencies
-        run: |
-          cd quaddtype/
-          python -m pip install --upgrade pip
-          python -m pip install "numpy @ git+https://github.com/numpy/numpy.git" pytest meson meson-python
-      - name: Build quaddtype package
-        run: |
-          cd quaddtype/
-          python -m pip install . -v
-      - name: Build Sphinx documentation
-        run: |
-          cd quaddtype/
-          python -m pip install ."[docs]"
-          cd docs/
-          sphinx-build -b html . _build/html/quaddtype
-      - name: Upload artifact
-        uses: actions/upload-pages-artifact@v4
-        with:
-          path: './quaddtype/docs/_build/html'
-      - name: Deploy to GitHub Pages
-        id: deployment
-        uses: actions/deploy-pages@v4
diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
deleted file mode 100644
index 53928a29..00000000
--- a/.github/workflows/build_wheels.yml
+++ /dev/null
@@ -1,244 +0,0 @@
-name: Build Wheels
-
-on:
-  push:
-    branches:
-      - main
-    tags:
-      - "quaddtype-v*"
-    paths:
-      - "quaddtype/**"
-      - ".github/workflows/**"
-  pull_request:
-    paths:
-      - "quaddtype/**"
-      - ".github/workflows/**"
-  workflow_dispatch:
-
-jobs:
-  build_wheels_linux:
-    name: Build wheels on Linux
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Set up Python
-        uses: actions/setup-python@v6
-        with:
-          python-version: ">=3.11.0"
-
-      - name: Install cibuildwheel
-        run: pip install cibuildwheel==3.1.4
-
-      - name: Build wheels
-        env:
-          CIBW_BUILD: "cp311-manylinux_x86_64 cp312-manylinux_x86_64 cp313-manylinux_x86_64 cp313t-manylinux_x86_64 cp314-manylinux_x86_64 cp314t-manylinux_x86_64"
-          CIBW_ENABLE: cpython-prerelease cpython-freethreading
-          CIBW_MANYLINUX_X86_64_IMAGE: manylinux_2_28
-          CIBW_BUILD_VERBOSITY: "3"
-          CIBW_BEFORE_ALL: |
-            yum update -y
-            yum install -y cmake gcc gcc-c++ make git pkgconfig
-          CIBW_ENVIRONMENT: >
-            LDFLAGS="-fopenmp"
-          CIBW_REPAIR_WHEEL_COMMAND: |
-            auditwheel repair -w {dest_dir} --plat manylinux_2_28_x86_64 {wheel}
-          CIBW_TEST_COMMAND: |
-            pip install numpy
-            pip install --no-deps {wheel}
-            pip install pytest pytest-run-parallel
-            if python -c "import sys; exit(0 if hasattr(sys, '_is_gil_enabled') and not sys._is_gil_enabled() else 1)"; then
-              pytest --parallel-threads=10 --iterations=10 {project}/tests
-            else
-              pytest -s {project}/tests
-            fi
-          CIBW_TEST_EXTRAS: "test"
-        run: |
-          python -m cibuildwheel --output-dir wheelhouse
-        working-directory: ./quaddtype
-
-      - uses: actions/upload-artifact@v6
-        with:
-          path: ./quaddtype/wheelhouse/*.whl
-          name: wheels-linux
-
-  build_wheels_macos:
-    name: Build wheels on ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-14, macos-15, macos-15-intel]
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Set up Python
-        uses: actions/setup-python@v6
-        with:
-          python-version: ">=3.11.0"
-
-      - name: Install dependencies
-        run: |
-          packages="cmake libomp git"
-          echo "Remove preinstalled dependencies"
-          for pkg in $packages; do
-            brew uninstall --ignore-dependencies $pkg 2>/dev/null || true
-          done
-          brew cleanup
-          brew install $packages
-
-      - name: Installing Python dependencies
-        run: |
-          pip install -U pip
-          pip install cibuildwheel==3.1.4
-          pip install pytest-run-parallel
-
-      - name: Build wheels
-        env:
-          CIBW_BUILD: "cp311-* cp312-* cp313-* cp314-* cp313t-* cp314t-*"
-          CIBW_ENABLE: cpython-prerelease cpython-freethreading
-          # CIBW_ARCHS_MACOS: ${{ matrix.os == 'macos-13' && 'x86_64' || 'arm64' }}
-          CIBW_BUILD_VERBOSITY: "3"
-          CIBW_ENVIRONMENT: >
-            MACOSX_DEPLOYMENT_TARGET="${{ matrix.os == 'macos-14' && '14.0' || '15.0' }}"
-          CIBW_REPAIR_WHEEL_COMMAND: >
-            delocate-wheel --require-archs {delocate_archs} -w {dest_dir} -v {wheel}
-          CIBW_TEST_COMMAND: |
-            pip install numpy
-            pip install --no-deps {wheel}
-            pip install pytest pytest-run-parallel
-            if python -c "import sys; exit(0 if hasattr(sys, '_is_gil_enabled') and not sys._is_gil_enabled() else 1)"; then
-              pytest --parallel-threads=10 --iterations=10 {project}/tests
-            else
-              pytest -s {project}/tests
-            fi
-          CIBW_TEST_EXTRAS: "test"
-        run: |
-          python -m cibuildwheel --output-dir wheelhouse
-        working-directory: ./quaddtype
-
-      - uses: actions/upload-artifact@v6
-        with:
-          path: ./quaddtype/wheelhouse/*.whl
-          name: wheels-${{ matrix.os }}
-
-  # disabling QBLAS optimization for windows due to incompatibility with MSVC
-  build_wheels_windows:
-    name: Build wheels on Windows
-    runs-on: windows-latest
-    strategy:
-      matrix:
-        architecture: [x64]
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Setup MSVC
-        uses: ilammy/msvc-dev-cmd@v1
-        with:
-          arch: ${{ matrix.architecture }}
-
-      - name: Set up Python
-        uses: actions/setup-python@v6
-        with:
-          python-version: ">=3.11.0"
-          architecture: ${{ matrix.architecture }}
-
-      - name: Install CMake
-        uses: lukka/get-cmake@latest
-
-      - name: Install build dependencies
-        shell: bash -l {0}
-        run: |
-          pip install -U pip
-          pip install cibuildwheel==3.1.4 ninja meson meson-python numpy delvewheel pytest
-
-      - name: Build wheels
-        env:
-          CIBW_BUILD: "cp311-* cp312-* cp313-* cp314-* cp313t-* cp314t-*"
-          CIBW_ENABLE: cpython-prerelease cpython-freethreading
-          CIBW_ARCHS_WINDOWS: ${{ matrix.architecture == 'x86' && 'x86' || 'AMD64' }}
-          CIBW_BUILD_VERBOSITY: "3"
-          DISTUTILS_USE_SDK: "1"
-          MSSdk: "1"
-          CIBW_ENVIRONMENT: >
-            CFLAGS="/DDISABLE_QUADBLAS $CFLAGS"
-            CXXFLAGS="/DDISABLE_QUADBLAS $CXXFLAGS"
-          CIBW_REPAIR_WHEEL_COMMAND: 'delvewheel repair -w {dest_dir} {wheel} --add-path C:\sleef\bin'
-          CIBW_TEST_COMMAND_WINDOWS: pip install numpy && pip install --no-deps {wheel} && pip install pytest pytest-run-parallel && pytest -s {project}/tests
-          CIBW_TEST_EXTRAS: test
-        shell: pwsh
-        run: |
-          python -m cibuildwheel --output-dir wheelhouse
-          if (-not (Test-Path wheelhouse/*.whl)) { throw "Wheel was not created" }
-        working-directory: ./quaddtype
-
-      - uses: actions/upload-artifact@v6
-        with:
-          path: ./quaddtype/wheelhouse/*.whl
-          name: wheels-windows-${{ matrix.architecture }}
-
-  build_sdist:
-    name: Build SDist
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Set up Python
-        uses: actions/setup-python@v6
-        with:
-          python-version: ">=3.11.0"
-
-      - name: Install system dependencies
-        run: |
-          sudo apt-get update -y
-          sudo apt-get install -y cmake gcc g++ make git pkg-config
-
-      - name: Install build dependencies
-        run: |
-          python -m pip install --upgrade pip build
-
-      - name: Build SDist & test sdist
-        env:
-          LDFLAGS: "-fopenmp"
-        run: |
-          python -m build --sdist --outdir dist/
-          pip install "$(ls dist/*.tar.gz)"[test] -v
-          pytest -s tests
-        working-directory: ./quaddtype
-
-      - name: Upload SDist artifact
-        uses: actions/upload-artifact@v6
-        with:
-          name: sdist
-          path: ./quaddtype/dist/*.tar.gz
-
-  publish_to_pypi:
-    name: Publish to PyPI
-    needs:
-      [
-        build_wheels_linux,
-        build_wheels_macos,
-        build_wheels_windows,
-        build_sdist,
-      ]
-    runs-on: ubuntu-latest
-    if: startsWith(github.ref, 'refs/tags/quaddtype-v')
-
-    environment:
-      name: quadtype_release
-      url: https://pypi.org/p/numpy-quaddtype
-
-    permissions:
-      id-token: write # IMPORTANT: mandatory for trusted publishing
-
-    steps:
-      - name: Download all workflow run artifacts
-        uses: actions/download-artifact@v7
-        with:
-          pattern: "*"
-          path: dist
-          merge-multiple: true
-
-      - name: Publish to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b745ad13..00eb712e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -56,21 +56,7 @@ jobs:
         working-directory: unytdtype
         run: |
           pytest -vvv --color=yes
-      - name: Install quaddtype dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libmpfr-dev libssl-dev libfftw3-dev
-
-      - name: Install quaddtype
-        working-directory: quaddtype
-        run: |
-          export LDFLAGS="-fopenmp"
-          python -m pip install .[test] -v --no-build-isolation
-
-      - name: Run quaddtype tests
-        working-directory: quaddtype
-        run: |
-          pytest -vvv --color=yes
+      # NOTE: quaddtype has moved to https://github.com/numpy/numpy-quaddtype
       - name: Install stringdtype
         working-directory: stringdtype
         run: |
diff --git a/.github/workflows/typecheck.yml b/.github/workflows/typecheck.yml
deleted file mode 100644
index c2be0cf5..00000000
--- a/.github/workflows/typecheck.yml
+++ /dev/null
@@ -1,49 +0,0 @@
-name: Validate static types in quaddtype
-permissions: read-all
-
-on:
-  pull_request:
-    paths:
-      - .github/workflows/typecheck.yml
-      - quaddtype/src/numpy_quaddtype/**
-      - quaddtype/meson.build
-      - quaddtype/pyproject.toml
-  workflow_dispatch:
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  typecheck_quaddtype:
-    runs-on: ubuntu-latest
-    timeout-minutes: 2
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - uses: astral-sh/setup-uv@v7.2.0
-        with:
-          activate-environment: true
-          python-version: "3.12"
-
-      - name: install
-        working-directory: quaddtype
-        run: |
-          uv pip install mypy pyright .
-
-      - name: pyright
-        working-directory: quaddtype
-        run: pyright
-
-      - name: pyright --verifytypes
-        working-directory: quaddtype
-        run: pyright --ignoreexternal --verifytypes numpy_quaddtype
-
-      - name: mypy
-        working-directory: quaddtype
-        run: mypy --no-incremental --cache-dir=/dev/null .
-
-      - name: stubtest
-        working-directory: quaddtype
-        run: stubtest --mypy-config-file pyproject.toml numpy_quaddtype
diff --git a/quaddtype/README.md b/quaddtype/README.md
index aa2884d5..cf24b251 100644
--- a/quaddtype/README.md
+++ b/quaddtype/README.md
@@ -1,5 +1,8 @@
 # NumPy-QuadDType
 
+> [!IMPORTANT]
+> **This project has moved!** Development has been relocated to a dedicated repository at [numpy/numpy-quaddtype](https://github.com/numpy/numpy-quaddtype). Please visit the new repository for the latest updates, issues, and contributions.
+
 [![PyPI](https://img.shields.io/pypi/v/numpy-quaddtype.svg)](https://pypi.org/project/numpy-quaddtype/)
 [![PyPI Downloads](https://static.pepy.tech/badge/numpy-quaddtype/month)](https://pepy.tech/project/numpy-quaddtype)
 [![Conda Downloads](https://img.shields.io/conda/dn/conda-forge/numpy_quaddtype.svg?label=Conda%20downloads)](https://anaconda.org/conda-forge/numpy_quaddtype)