diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 1e927846..58be274b 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -82,7 +82,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
       - name: Install Qermit
-        run: pip install -e . -v
+        run: pip install -e .[docs] -v
       - name: Build Docs
         run: |
           cd docs_src
diff --git a/.github/workflows/deploy_docs.yml b/.github/workflows/deploy_docs.yml
index 7922f6d9..57709643 100644
--- a/.github/workflows/deploy_docs.yml
+++ b/.github/workflows/deploy_docs.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
       - name: Install Qermit
-        run: pip install .
+        run: pip install .[docs]
       - name: Setup Pages
         uses: actions/configure-pages@v3
       - name: Build Docs
diff --git a/pyproject.toml b/pyproject.toml
index a01a5f56..078dc7ee 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,14 +18,13 @@ python = ">=3.10, <3.13"
 pytket-qiskit = "^0.50.0"
 matplotlib = "^3.8.3"
 
-pytest = "^8.1.1"
-mypy = "^1.9.0"
-flake8 = "^7.0.0"
-sphinx = "^7.2.6"
-pytest-cov = "^4.1.0"
-sphinx-book-theme = "^1.1.2"
-qiskit-ibm-provider = "^0.10.0"
-
+pytest = {version="^8.1.1", optional=true}
+mypy = {version="^1.9.0", optional=true}
+flake8 = {version="^7.0.0", optional=true}
+sphinx = {version="^7.2.6", optional=true}
+pytest-cov = {version="^4.1.0", optional=true}
+sphinx-book-theme = {version="^1.1.2", optional=true}
+qiskit-ibm-provider = {version="^0.10.0", optional=true}
 pytket-quantinuum = {version="^0.30.0", optional=true}
 
 [tool.poetry.extras]