diff --git a/.github/actions/setup-uv-python/action.yml b/.github/actions/setup-uv-python/action.yml
deleted file mode 100644
index a9e7b5a..0000000
--- a/.github/actions/setup-uv-python/action.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-name: "Setup Python + uv + sync"
-description: "Checkout, install uv, and uv sync (with optional groups, default Python 3.10)"
-inputs:
-  python-version:
-    description: "Python version to use"
-    required: false
-    default: "3.10"
-  groups:
-    description: "Comma-separated uv groups to sync (e.g. 'dev,docs'). Leave blank for default deps only."
-    required: false
-    default: ""
-
-runs:
-  using: "composite"
-  steps:
-    - name: Checkout
-      uses: actions/checkout@v4
-
-    - name: Setup UV
-      uses: astral-sh/setup-uv@v6
-
-    - name: Sync environment
-      shell: bash
-      run: |
-        GROUP_FLAGS=()
-        if [ -n "${{ inputs.groups }}" ]; then
-          IFS=',' read -ra G <<< "${{ inputs.groups }}"
-          for g in "${G[@]}"; do GROUP_FLAGS+=( "--group" "$(echo $g | xargs)" ); done
-        fi
-        uv sync "${GROUP_FLAGS[@]}" --python "${{ inputs.python-version }}"
\ No newline at end of file
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 77f7d5d..ffc23fe 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -30,15 +30,21 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: ./.github/actions/setup-uv-python
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Setup UV
+        uses: astral-sh/setup-uv@v6
         with:
-          python-version: ${{ matrix.python-version }}
-          groups: "test"
+          enable-cache: true
+          python-version: ${{ inputs.python-version }}
+          install-uv: true
 
       - name: Test
         run: |
+          uv sync --all-extras --group test
           cd tests
-          pytest --cov=peakrdl_busdecoder --synth-tool skip --sim-tool stub
+          uvx pytest --cov=peakrdl_busdecoder --synth-tool skip --sim-tool stub
 
       - name: Coveralls
         env:
@@ -46,16 +52,18 @@ jobs:
           COVERALLS_PARALLEL: true
         run: |
           cd tests
-          coveralls --service=github
+          uvx coveralls --service=github
 
   finish_coveralls:
     needs: test
     runs-on: ubuntu-latest
     steps:
-      - name: Setup Python
-        uses: actions/setup-python@v4
+      - name: Setup UV
+        uses: astral-sh/setup-uv@v6
         with:
-          python-version: 3.x
+          enable-cache: true
+          python-version: "3.10"
+          install-uv: true
 
       - name: Coveralls
         env:
@@ -63,17 +71,22 @@ jobs:
           COVERALLS_PARALLEL: true
         run: |
           python -m pip install coveralls>=3.0.0
-          coveralls --service=github --finish
+          uvx coveralls --service=github --finish
 
 #-------------------------------------------------------------------------------
   format:
     runs-on: ubuntu-latest
     steps:
-      - name: Setup (Python + uv + sync)
-        uses: ./.github/actions/setup-uv-python
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Setup UV
+        uses: astral-sh/setup-uv@v6
         with:
+          enable-cache: true
           python-version: "3.10"
-          groups: "tools"
+          install-uv: true
+          
       - name: Ruff format (check only)
         run: uvx ruff format --check .
 
@@ -81,11 +94,16 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - name: Setup (Python + uv + sync)
-        uses: ./.github/actions/setup-uv-python
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Setup UV
+        uses: astral-sh/setup-uv@v6
         with:
+          enable-cache: true
           python-version: "3.10"
-          groups: "tools"
+          install-uv: true
+
       - name: Ruff lint
         run: uvx ruff check --output-format=github .
 
@@ -93,10 +111,16 @@ jobs:
   typecheck:
     runs-on: ubuntu-latest
     steps:
-      - name: Setup (Python + uv + sync)
-        uses: ./.github/actions/setup-uv-python
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Setup UV
+        uses: astral-sh/setup-uv@v6
         with:
+          enable-cache: true
           python-version: "3.10"
+          install-uv: true
+
       - name: Pyrefly type check
         run: uvx pyrefly check --summarize-errors
 
@@ -110,10 +134,15 @@ jobs:
     name: Build distributions
     runs-on: ubuntu-latest
     steps:
-      - name: Setup (Python + uv + sync)
-        uses: ./.github/actions/setup-uv-python
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Setup UV
+        uses: astral-sh/setup-uv@v6
         with:
+          enable-cache: true
           python-version: "3.10"
+          install-uv: true
 
       - name: Build Package
         run: uv build