diff --git a/.github/actions/setup-project/action.yml b/.github/actions/setup-project/action.yml
new file mode 100644
index 0000000..cdc21c0
--- /dev/null
+++ b/.github/actions/setup-project/action.yml
@@ -0,0 +1,33 @@
+name: Common Python + Poetry Setup
+
+inputs:
+  dependency-groups:
+    description: 'A comma-separated list of dependency groups to install'
+    default: 'main'
+  python-version:
+    description: 'The Python version to use'
+    default: '3.10'
+
+runs:
+  using: 'composite'
+
+  steps:
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ inputs.python-version }}
+
+    - name: Load cached venv
+      id: cache-dependencies
+      uses: actions/cache@v4
+      with:
+        path: .venv
+        key: venv-${{ runner.os }}-python-${{ inputs.python-version }}-groups-${{ inputs.dependency-groups }}-lock-${{ hashFiles('**/poetry.lock') }}
+
+    - name: Install dependencies
+      if: steps.cache-dependencies.outputs.cache-hit != 'true'
+      shell: bash
+      run: |
+        python -m pip install poetry
+        poetry config virtualenvs.in-project true
+        poetry install --with ${{ inputs.dependency-groups }}
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 8e32a23..2066d1e 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -16,17 +16,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    
-    - name: Set up Python
-      uses: actions/setup-python@v5
+
+    - uses: './.github/actions/setup-project'
       with:
-        python-version: '3.10'
-      
-    - name: Install dependencies
-      run: |
-        python -m pip install poetry
-        poetry config virtualenvs.in-project true
-        poetry install --with dev
+        dependency-groups: 'docs'
       
     - name: Build documentation
       run: |
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index 6c38da0..1498bc6 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -10,17 +10,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    
-    - name: Set up Python
-      uses: actions/setup-python@v5
-      with:
-        python-version: '3.10'
 
-    - name: Install dependencies
-      run: |
-        python -m pip install poetry
-        poetry config virtualenvs.in-project true
-        poetry install --with dev,test
+    - uses: './.github/actions/setup-project'
+      with:
+        dependency-groups: 'dev,test'
     
     - uses: pre-commit/action@v3.0.1
     
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 2812c62..162d774 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -15,16 +15,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python
-      uses: actions/setup-python@v5
+
+    - uses: './.github/actions/setup-project'
       with:
-        python-version: '3.10'
-      
-    - name: Install dependencies
-      run: |
-        python -m pip install poetry
-        poetry config virtualenvs.in-project true
-        poetry install --with dev
+        dependency-groups: 'dev'
 
     - name: Prepare README
       run: ./scripts/refactor_readme.py README.md
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c7a0215..8233c3d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,17 +13,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    
-    - name: Set up Python
-      uses: actions/setup-python@v5
+
+    - uses: './.github/actions/setup-project'
       with:
-        python-version: '3.10'
-      
-    - name: Install dependencies
-      run: |
-        python -m pip install poetry
-        poetry config virtualenvs.in-project true
-        poetry install --with dev
+        dependency-groups: 'dev'
 
     - id: supported-versions
       name: Get supported versions
@@ -40,18 +33,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: './.github/actions/setup-project'
         with:
-          python-version: "${{ matrix.py-version }}"
-
-      - name: Install dependencies
-        run: |
-          python -m pip install poetry
-          poetry config virtualenvs.in-project true
-          
-          # Only install main dependencies
-          poetry install --with test
+          python-version: ${{ matrix.py-version }}
+          dependency-groups: 'test'
 
       - name: Run unit tests
         run: poetry run pytest