diff --git a/.github/workflows/build-deploy-book.yml b/.github/workflows/build-deploy-book.yml
index cb71533..58a577c 100644
--- a/.github/workflows/build-deploy-book.yml
+++ b/.github/workflows/build-deploy-book.yml
@@ -71,6 +71,38 @@ jobs:
         pip install --upgrade pip
         pip install -r requirements.txt
 
+    - name: Get list of changed Python notebooks
+      id: changed-ipynb-files
+      uses: tj-actions/changed-files@v45
+      with:
+        files: |
+          **.ipynb
+
+    - name: Check for dirty Python notebooks
+      if: steps.changed-ipynb-files.outputs.any_changed == 'true'
+      env:
+        ALL_CHANGED_FILES: ${{ steps.changed-ipynb-files.outputs.all_changed_files }}
+      run: |
+        # Check if there are dirty notebooks
+        dirty_ipynb=()
+        for file in ${ALL_CHANGED_FILES[*]}; do
+          echo "Checking $file..."
+          if ! nb-clean check $file >/dev/null 2>&1; then
+            dirty_ipynb+=($file)
+          fi
+        done
+
+        # Trigger failure if dirty notebooks were found
+        if [[ ! -z "${dirty_ipynb[@]}" ]]; then
+          echo "ERROR: Found dirty Python notebooks. Please clean the notebooks by running"
+          echo ""
+          echo "nb-clean clean --remove-empty-cells --remove-all-notebook-metadata ${dirty_ipynb[*]}"
+          echo ""
+          exit 1
+        else
+          echo "SUCCESS: All changed notebooks are clean."
+        fi
+
     - name: Build Jupyter Book
       run: make docs
 
diff --git a/_toc.yml b/_toc.yml
index 1db5e02..1f7600b 100644
--- a/_toc.yml
+++ b/_toc.yml
@@ -175,5 +175,8 @@ parts:
       - file: chapter5/multiphysics
   - caption: Documentation
     chapters:
-      - file: documentation/sympde
-      - file: documentation/psydac
+    - url: https://pyccel.github.io/psydac/index.html
+      title: Psydac
+    - url: https://sympde.readthedocs.io/en/latest/
+      title: SymPDE
+
diff --git a/documentation/psydac.rst b/documentation/psydac.rst
deleted file mode 100644
index dd90723..0000000
--- a/documentation/psydac.rst
+++ /dev/null
@@ -1,19 +0,0 @@
-Psydac API Reference
-====================
-
-.. autosummary::
-   :toctree: _autosummary
-   :recursive:
-
-   psydac.api       
-   psydac.cad
-   psydac.cmd
-   psydac.core
-   psydac.ddm
-   psydac.feec
-   psydac.fem
-   psydac.linalg
-   psydac.mapping
-   psydac.polar
-   psydac.pyccel
-   psydac.utilities
diff --git a/documentation/sympde.rst b/documentation/sympde.rst
deleted file mode 100644
index 3fc651f..0000000
--- a/documentation/sympde.rst
+++ /dev/null
@@ -1,14 +0,0 @@
-SymPDE API Reference
-====================
-
-.. autosummary::
-   :toctree: _autosummary
-   :recursive:
-
-   sympde.core
-   sympde.calculus 
-   sympde.topology
-   sympde.expr
-   sympde.printing
-   sympde.exterior
-   sympde.utilities