diff --git a/.github/workflows/cog.yml b/.github/workflows/cog.yml
index 95a35399f..e1d9a4cdb 100644
--- a/.github/workflows/cog.yml
+++ b/.github/workflows/cog.yml
@@ -17,19 +17,20 @@ jobs:
         with:
           ref: ${{ github.head_ref }}
 
-      - name: Set up Python 3.11
+      - name: Set up Python
         uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
 
       - name: Install dependencies
         run: |
-          pip install -e '.[test]'
-          pip install -r docs/requirements.txt
+          uv sync --extra test
+          uv pip install -r docs/requirements.txt
 
       - name: Run cog
         run: |
-          cog -r -p "import sys, os; sys._called_from_test=True; os.environ['LLM_USER_PATH'] = '/tmp'" docs/**/*.md docs/*.md README.md
+          uv run cog -r -p "import sys, os; sys._called_from_test=True; os.environ['LLM_USER_PATH'] = '/tmp'" docs/**/*.md docs/*.md README.md
 
       - name: Check for changes
         id: check-changes
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 1b63d02c9..7e441c055 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -19,14 +19,14 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
-        cache: pip
-        cache-dependency-path: setup.py
+    - name: Install uv
+      uses: astral-sh/setup-uv@v4
     - name: Install dependencies
       run: |
-        pip install '.[test]'
+        uv sync --extra test
     - name: Run tests
       run: |
-        pytest
+        uv run pytest
   deploy:
     runs-on: ubuntu-latest
     environment: release
@@ -37,15 +37,10 @@ jobs:
     - uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v5
-      with:
-        python-version: '3.13'
-        cache: pip
-        cache-dependency-path: setup.py
-    - name: Install dependencies
-      run: |
-        pip install setuptools wheel build
+    - name: Install uv
+      uses: astral-sh/setup-uv@v4
     - name: Build
       run: |
-        python -m build
+        uv build
     - name: Publish
       uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 39e7f62d2..9b2818bf4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,35 +18,37 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
-        cache: pip
-        cache-dependency-path: setup.py
+    - name: Install uv
+      uses: astral-sh/setup-uv@v4
+
     - name: Install dependencies
       run: |
-        pip install -e '.[test]'
+        uv sync --extra test
+        uv pip install -r docs/requirements.txt
     - name: Run tests
       run: |
-        python -m pytest -vv
+         uv run python -m pytest -vv
     - name: Check if cog needs to be run
       if: matrix.os != 'windows-latest'
       run: |
-        cog --check \
+        uv run cog --check \
           -p "import sys, os; sys._called_from_test=True; os.environ['LLM_USER_PATH'] = '/tmp'" \
           docs/**/*.md docs/*.md
     - name: Run Black
       if: matrix.os != 'windows-latest'
       run: |
-        black --check .
+        uv run black --check .
     - name: Run mypy
       if: matrix.os != 'windows-latest'
       run: |
-        mypy llm
+        uv run mypy llm
     - name: Run ruff
       if: matrix.os != 'windows-latest'
       run: |
-        ruff check .
+        uv run ruff check .
     - name: Check it builds
       run: |
-        python -m build
+        uv build
     - name: Run test-llm-load-plugins.sh
       if: matrix.os != 'windows-latest'
       run: |
diff --git a/.python-version b/.python-version
new file mode 100644
index 000000000..976544ccb
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.13.7
diff --git a/Justfile b/Justfile
index 033ebdacc..ebe20307a 100644
--- a/Justfile
+++ b/Justfile
@@ -3,47 +3,48 @@
 
 # Install dependencies and test dependencies
 @init:
-  pipenv run pip install -e '.[test]'
+  uv sync --extra test
+  uv pip install -r docs/requirements.txt
 
 # Run pytest with supplied options
 @test *options:
-  pipenv run pytest {{options}}
+  uv run pytest {{options}}
 
 # Run linters
 @lint:
   echo "Linters..."
   echo "  Black"
-  pipenv run black . --check
+  uv run black . --check
   echo "  cog"
-  pipenv run cog --check \
+  uv run cog --check \
     -p "import sys, os; sys._called_from_test=True; os.environ['LLM_USER_PATH'] = '/tmp'" \
     README.md docs/*.md
   echo "  mypy"
-  pipenv run mypy llm
+  uv run mypy llm
   echo "  ruff"
-  pipenv run ruff check .
+  uv run ruff check .
 
 # Run mypy
 @mypy:
-  pipenv run mypy llm
+  uv run mypy llm
 
 # Rebuild docs with cog
 @cog:
-  pipenv run cog -r -p "import sys, os; sys._called_from_test=True; os.environ['LLM_USER_PATH'] = '/tmp'" docs/**/*.md docs/*.md README.md
+  uv run cog -r -p "import sys, os; sys._called_from_test=True; os.environ['LLM_USER_PATH'] = '/tmp'" docs/**/*.md docs/*.md README.md
 
 # Serve live docs on localhost:8000
 @docs: cog
   rm -rf docs/_build
-  cd docs && pipenv run make livehtml
+  cd docs && uv run make livehtml
 
 # Apply Black
 @black:
-  pipenv run black .
+  uv run black .
 
 # Run automatic fixes
 @fix: cog
-  pipenv run ruff check . --fix
-  pipenv run black .
+  uv run ruff check . --fix
+  uv run black .
 
 # Push commit if tests pass
 @push: test lint
diff --git a/mise.toml b/mise.toml
new file mode 100644
index 000000000..adbf49ddb
--- /dev/null
+++ b/mise.toml
@@ -0,0 +1,3 @@
+[tools]
+uv = "0.5.9"
+just = "1.42.4"