diff --git a/.cirun.yml b/.cirun.yml
new file mode 100644
index 0000000..263d0fa
--- /dev/null
+++ b/.cirun.yml
@@ -0,0 +1,11 @@
+runners:
+  - name: aws-gpu-runner
+    cloud: aws
+    instance_type: g4dn.xlarge
+    machine_image: ami-067a4ba2816407ee9
+    region: eu-north-1
+    preemptible:
+      - true
+      - false
+    labels:
+      - cirun-aws-gpu
diff --git a/.github/workflows/test-gpu.yaml b/.github/workflows/test-gpu.yaml
new file mode 100644
index 0000000..a7d7b3c
--- /dev/null
+++ b/.github/workflows/test-gpu.yaml
@@ -0,0 +1,65 @@
+name: GPU-CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    types:
+      - labeled
+      - opened
+      - synchronize
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  check:
+    name: "Triage: Check if GPU tests are allowed to run"
+    if: (!contains(github.event.pull_request.labels.*.name, 'skip-gpu-ci'))
+    runs-on: ubuntu-latest
+    steps:
+      - uses: flying-sheep/check@v1
+        with:
+          success: ${{ github.event_name == 'push' || contains(github.event.pull_request.labels.*.name, 'run-gpu-ci') }}
+  test:
+    name: GPU Tests
+    needs: check
+    runs-on: "cirun-aws-gpu--${{ github.run_id }}"
+    timeout-minutes: 30
+
+    defaults:
+      run:
+        shell: bash -el {0}
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Nvidia SMI sanity check
+        run: nvidia-smi
+
+      - name: Install Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          cache-dependency-glob: pyproject.toml
+
+      - name: Install fknni
+        run: uv pip install --system -e ".[test]"
+      - name: Pip list
+        run: pip list
+
+      - name: Run test
+        run: pytest -m gpu
+
+      - name: Remove 'run-gpu-ci' Label
+        if: always()
+        uses: actions-ecosystem/action-remove-labels@v1
+        with:
+          labels: "run-gpu-ci"
+          github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index ea56d64..eda403b 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -31,7 +31,7 @@ jobs:
           filter: blob:none
           fetch-depth: 0
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v7
       - name: Get test environments
         id: get-envs
         run: |
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9bc9110..885e723 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,12 @@ and this project adheres to [Semantic Versioning][].
 [keep a changelog]: https://keepachangelog.com/en/1.0.0/
 [semantic versioning]: https://semver.org/spec/v2.0.0.html
 
+## [1.3.0]
+
+- Add GPU CI ([#15](https://github.com/zethson/fknni/pull/15)) @zethson
+- Add support for 3D imputation ([#14](https://github.com/zethson/fknni/pull/14)) @zethson
+- Require Python 3.12+ ([#13](https://github.com/zethson/fknni/pull/14)) @zethson
+
 ## [1.2.0]
 
 - Iterative imputation for very sparse datasets
diff --git a/README.md b/README.md
index 0804041..3ebf244 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ Please refer to the [documentation][link-docs]. In particular, the
 
 ## Installation
 
-You need to have Python 3.10 or newer installed on your system.
+You need to have Python 3.12 or newer installed on your system.
 If you don't have Python installed, we recommend installing [Mambaforge](https://github.com/conda-forge/miniforge#mambaforge).
 
 Install the latest release of `fknni` from [PyPI](https://pypi.org/project/fknni):
diff --git a/ci/environment.yml b/ci/environment.yml
new file mode 100644
index 0000000..38e8c1d
--- /dev/null
+++ b/ci/environment.yml
@@ -0,0 +1,10 @@
+name: fknni
+channels:
+ - rapidsai
+ - nvidia
+ - conda-forge
+dependencies:
+ - rapids=25.10
+ - python=3.13
+ - cuda-version=12.9
+ - cudnn
diff --git a/pyproject.toml b/pyproject.toml
index e45f9b4..419a0b5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,11 +45,24 @@ optional-dependencies.doc = [
   "sphinxcontrib-bibtex>=1",
   "sphinxext-opengraph",
 ]
+optional-dependencies.rapids12 = [
+  "cudf-cu12>=25.10",
+  "cugraph-cu12>=25.10",
+  "cuml-cu12>=25.10",
+  "cupy-cuda12x",
+  "cuvs-cu12>=25.10",
+]
+optional-dependencies.rapids13 = [
+  "cudf-cu13>=25.10",
+  "cugraph-cu13>=25.10",
+  "cuml-cu13>=25.10",
+  "cupy-cuda13x",
+  "cuvs-cu13>=25.10",
+]
 optional-dependencies.test = [
   "coverage",
   "pytest",
 ]
-
 urls.Documentation = "https://fknni.readthedocs.io/"
 urls.Homepage = "https://github.com/zethson/fknni"
 urls.Source = "https://github.com/zethson/fknni"
@@ -130,6 +143,9 @@ xfail_strict = true
 addopts = [
   "--import-mode=importlib", # allow using test files with same name
 ]
+markers = [
+  "gpu: mark test to run on GPU",
+]
 
 [tool.coverage.run]
 source = [ "fknni" ]
diff --git a/tests/conftest.py b/tests/cpu/conftest.py
similarity index 100%
rename from tests/conftest.py
rename to tests/cpu/conftest.py
diff --git a/tests/test_faiss_imputation.py b/tests/cpu/test_faiss_imputation.py
similarity index 100%
rename from tests/test_faiss_imputation.py
rename to tests/cpu/test_faiss_imputation.py
diff --git a/tests/gpu/test_gpu.py b/tests/gpu/test_gpu.py
new file mode 100644
index 0000000..f3891cc
--- /dev/null
+++ b/tests/gpu/test_gpu.py
@@ -0,0 +1,6 @@
+import pytest
+
+
+@pytest.mark.gpu
+def test_gpu():
+    assert 1 + 1 == 2