diff --git a/index.ipynb b/index.ipynb
index 81131e739bbbc951025e614a2564f10f9472bf22..7fc59fe3bd28153dccd3e87999a462d29ccb6d11 100644
--- a/index.ipynb
+++ b/index.ipynb
@@ -470,7 +470,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.0"
+   "version": "3.9.6"
   },
   "toc": {
    "base_numbering": 1,
diff --git a/tour1_intro/1_1_roadmap.ipynb b/tour1_intro/1_1_roadmap.ipynb
index efe4cf7236c8fb1f6304128f3cb22783c56581ba..1df8ba35f43355ecffabda5487e01f8a9ebe9f39 100644
--- a/tour1_intro/1_1_roadmap.ipynb
+++ b/tour1_intro/1_1_roadmap.ipynb
@@ -111,9 +111,9 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "base",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
-   "name": "base"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
@@ -125,7 +125,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.1"
+   "version": "3.9.6"
   },
   "toc": {
    "base_numbering": 1,
diff --git a/tour1_intro/1_2_jupyter_python.ipynb b/tour1_intro/1_2_jupyter_python.ipynb
index acc7a887357dac30089eeb5043164f09d6550c20..8f7bb4fde5e0d9cfe9339050e8f5f4acbe2ee638 100644
--- a/tour1_intro/1_2_jupyter_python.ipynb
+++ b/tour1_intro/1_2_jupyter_python.ipynb
@@ -163,9 +163,9 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "base",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
-   "name": "base"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
@@ -177,7 +177,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.1"
+   "version": "3.9.6"
   },
   "toc": {
    "base_numbering": 1,
diff --git a/tour1_intro/1_3_elastic_stiffness_of_the_composite.ipynb b/tour1_intro/1_3_elastic_stiffness_of_the_composite.ipynb
index 32029b18cdef9be9fa372dd8cb83952dd231790a..8a500186ca93678a67699186afab34ccbdfe56b6 100644
--- a/tour1_intro/1_3_elastic_stiffness_of_the_composite.ipynb
+++ b/tour1_intro/1_3_elastic_stiffness_of_the_composite.ipynb
@@ -386,9 +386,9 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "base",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
-   "name": "base"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
@@ -400,7 +400,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.1"
+   "version": "3.9.6"
   },
   "toc": {
    "base_numbering": 1,