diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 001d15b..06a1d9b 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -26,7 +26,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install pytest pytest-cov pytest-mock
+        pip install -e ".[dev]"
         pip install -r requirements.txt
 
     - name: Install package
diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 0e2bb10..f69b6f2 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -54,7 +54,7 @@ jobs:
 
     - name: Run unit tests
       run: |
-        pip install pytest pytest-mock
+        pip install -e ".[dev]"
         pytest tests/ -v
 
     - name: Lint Python code with ruff
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b7fc584..c841a73 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -134,21 +134,16 @@ Unsure where to begin? Look for issues labeled:
 
 3. **Install dependencies**:
    ```bash
-   pip install -e .
+   pip install -e ".[dev]"
    pip install -r requirements.txt
    ```
 
-4. **Install development dependencies**:
-   ```bash
-   pip install pytest pytest-cov black isort flake8 mypy
-   ```
-
-5. **Install external tools** (optional, for full testing):
+4. **Install external tools** (optional, for full testing):
    ```bash
    python -m docksec.setup_external_tools
    ```
 
-6. **Set up environment variables**:
+5. **Set up environment variables**:
    ```bash
    cp .env.example .env
    # Edit .env and add your OpenAI API key if testing AI features
diff --git a/setup.py b/setup.py
index 2085594..d31d407 100644
--- a/setup.py
+++ b/setup.py
@@ -35,6 +35,15 @@
         "ruamel.yaml>=0.18.6",
     ],
     extras_require={
+        "dev": [
+            "pytest",
+            "pytest-cov",
+            "pytest-mock",
+            "black",
+            "isort",
+            "flake8",
+            "mypy",
+        ],
         "ai": [
             "langchain-core>=1.3,<2",
             "langchain>=1.2,<2",