diff --git a/examples/31_nested_graphs.ipynb b/examples/31_nested_graphs.ipynb
index d5fd8c2..95c42e1 100644
--- a/examples/31_nested_graphs.ipynb
+++ b/examples/31_nested_graphs.ipynb
@@ -5,7 +5,7 @@
    "id": "95c7a78b-917a-42b6-a1a9-b3255c0667ce",
    "metadata": {},
    "source": [
-    "# Nested Graphs <a target=\"_blank\" href=\"https://colab.research.google.com/github/yWorks/yfiles-jupyter-graphs/blob/main/examples/31_nested_graphs\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>\n",
+    "# Nested Graphs <a target=\"_blank\" href=\"https://colab.research.google.com/github/yWorks/yfiles-jupyter-graphs/blob/main/examples/31_nested_graphs.ipynb\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>\n",
     "\n",
     "Before using the graph widget, install all necessary packages and initialize your widget."
    ]