diff --git a/docs/conf.py b/docs/conf.py
index cf8f52aae..b94de642d 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -119,5 +119,5 @@ nbsphinx_prolog = """
 .. image:: {{ colab }}/assets/colab-badge.svg
    :class: colabbadge
    :alt: Open in Colab
-   :target: {{ colab }}/github/{{ repo }}/blob/{{ branch }}/docs/{{ env.docname }}
+   :target: {{ colab }}/github/{{ repo }}/blob/{{ branch }}/docs/{{ env.docname }}.ipynb
 """