diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index e459dfe..391af1e 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -39,9 +39,12 @@ jobs:
           micromamba activate map-binning
           pip install -e .
           
-      # Build the package documentaion
+      # Build the package documentation
       - name: Build Jupyter Book
         shell: bash -l {0}
+        env:
+          COPERNICUSMARINE_SERVICE_USERNAME: ${{ secrets.COPERNICUSMARINE_SERVICE_USERNAME }}
+          COPERNICUSMARINE_SERVICE_PASSWORD: ${{ secrets.COPERNICUSMARINE_SERVICE_PASSWORD }}
         run: |
           micromamba activate map-binning
           jupyter-book build doc/
diff --git a/doc/content/cmems_example.ipynb b/doc/content/cmems_example.ipynb
index f43a477..710af29 100644
--- a/doc/content/cmems_example.ipynb
+++ b/doc/content/cmems_example.ipynb
@@ -64,7 +64,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "id": "34f95917",
    "metadata": {},
    "outputs": [
@@ -75,16 +75,6 @@
       "/home/chsu/.conda/envs/map-binning/lib/python3.11/site-packages/tqdm/auto.py:21: TqdmWarning: IProgress not found. Please update jupyter and ipywidgets. See https://ipywidgets.readthedocs.io/en/stable/user_install.html\n",
       "  from .autonotebook import tqdm as notebook_tqdm\n"
      ]
-    },
-    {
-     "data": {
-      "text/plain": [
-       "True"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
     }
    ],
    "source": [
@@ -98,10 +88,25 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "id": "9751f3c2",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "load_dotenv() returned: True\n",
+      "GITHUB_ACTIONS: None\n",
+      "Available environment variables:\n",
+      "  COPERNICUSMARINE_SERVICE_PASSWORD: ***\n",
+      "  COPERNICUSMARINE_SERVICE_USERNAME: chsu8\n",
+      "Username found: True\n",
+      "Password found: True\n",
+      "✅ Credentials loaded successfully\n"
+     ]
+    }
+   ],
    "source": [
     "\n",
     "# Try to load .env file\n",