diff --git a/001-Extensions/Dask_JURECA.ipynb b/001-Extensions/Dask_JURECA.ipynb
index 2ea5caf71e6e27f063bbef0d05e606e648bbc1d5..85109fae1b1a377267e7e21c1464e228dbb461a9 100644
--- a/001-Extensions/Dask_JURECA.ipynb
+++ b/001-Extensions/Dask_JURECA.ipynb
@@ -7,6 +7,22 @@
     "# Dask Extension"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## If you have problems with this tutorial, try to download the Notebook."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "!wget https://jupyter-jsc.fz-juelich.de/static/files/Dask_JURECA.ipynb"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -366,7 +382,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.8"
+   "version": "3.7.3"
   }
  },
  "nbformat": 4,
diff --git a/001-Extensions/Dask_JURON.ipynb b/001-Extensions/Dask_JURON.ipynb
index 376b515fb23aaf41de8d1fe54a33bd3912591a80..4a92110386d38cd7fd7d296eb3204641e32104c3 100644
--- a/001-Extensions/Dask_JURON.ipynb
+++ b/001-Extensions/Dask_JURON.ipynb
@@ -7,6 +7,22 @@
     "# Dask Extension"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## If you have problems with this tutorial, try to download the Notebook."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "!wget https://jupyter-jsc.fz-juelich.de/static/files/Dask_JURON.ipynb"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -358,7 +374,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.8"
+   "version": "3.7.3"
   }
  },
  "nbformat": 4,
diff --git a/001-Extensions/Dask_JUWELS.ipynb b/001-Extensions/Dask_JUWELS.ipynb
index 851aaba398d545f3e9b5af764545984290e7b55a..3a757fbd713211528b663ca4a16efd741ca2ead2 100644
--- a/001-Extensions/Dask_JUWELS.ipynb
+++ b/001-Extensions/Dask_JUWELS.ipynb
@@ -7,6 +7,22 @@
     "# Dask Extension"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## If you have problems with this tutorial, try to download the Notebook."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "!wget https://jupyter-jsc.fz-juelich.de/static/files/Dask_JUWELS.ipynb"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -384,7 +400,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.8"
+   "version": "3.7.3"
   }
  },
  "nbformat": 4,