diff --git a/doc/source/examples/FairSVM.ipynb b/doc/source/examples/FairSVM.ipynb
index 4fd9be6..8d5a918 100644
--- a/doc/source/examples/FairSVM.ipynb
+++ b/doc/source/examples/FairSVM.ipynb
@@ -34,6 +34,12 @@
     "> **Note.** Since the hinge loss is a plq function, and fairness constraints are linear, thus we can solve it by `rehline.plqERM_Ridge`."
    ]
   },
+  {
+   "metadata": {},
+   "cell_type": "markdown",
+   "source": "",
+   "id": "7bf9272115591bbf"
+  },
   {
    "cell_type": "code",
    "execution_count": 1,
@@ -199,25 +205,18 @@
    ]
   }
  ],
- "metadata": {
+  "metadata": {
+  "colab": {
+   "provenance": []
+  },
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
-   "language": "python",
+   "display_name": "Python 3",
    "name": "python3"
   },
   "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "name": "python"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 5
-}
+ "nbformat_minor": 0
+}
\ No newline at end of file
diff --git a/doc/source/examples/QR.ipynb b/doc/source/examples/QR.ipynb
index f514554..afcbfda 100644
--- a/doc/source/examples/QR.ipynb
+++ b/doc/source/examples/QR.ipynb
@@ -98,25 +98,18 @@
    ]
   }
  ],
- "metadata": {
+  "metadata": {
+  "colab": {
+   "provenance": []
+  },
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
-   "language": "python",
+   "display_name": "Python 3",
    "name": "python3"
   },
   "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "name": "python"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 5
-}
+ "nbformat_minor": 0
+}
\ No newline at end of file
diff --git a/doc/source/examples/SVM.ipynb b/doc/source/examples/SVM.ipynb
index b52b29e..5b35866 100644
--- a/doc/source/examples/SVM.ipynb
+++ b/doc/source/examples/SVM.ipynb
@@ -86,24 +86,17 @@
   }
  ],
  "metadata": {
+  "colab": {
+   "provenance": []
+  },
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
-   "language": "python",
+   "display_name": "Python 3",
    "name": "python3"
   },
   "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "name": "python"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 5
+ "nbformat_minor": 0
 }