diff --git a/notebooks/wradlib/wradlib_quasi_vertical_profiles.ipynb b/notebooks/wradlib/wradlib_quasi_vertical_profiles.ipynb
index 8f756ca7..313c5bef 100644
--- a/notebooks/wradlib/wradlib_quasi_vertical_profiles.ipynb
+++ b/notebooks/wradlib/wradlib_quasi_vertical_profiles.ipynb
@@ -313,7 +313,7 @@
     "\n",
     "- [xarray](https://docs.xarray.dev)\n",
     "- [dask](https://docs.dask.org/)\n",
-    "- [wradlib xarray backends](https://docs.wradlib.org/en/stable/notebooks/fileio/wradlib_xarray_backends.html)\n",
+    "- [wradlib xarray backends](https://docs.wradlib.org/projects/old-docs/en/1.16.0/notebooks/fileio/wradlib_xarray_backends.html)\n",
     "- [OPERA ODIM_H5](https://www.eumetnet.eu/activities/observations-programme/current-activities/opera/)\n",
     "- [WMO JET-OWR](https://community.wmo.int/governance/commission-membership/commission-observation-infrastructure-and-information-systems-infcom/commission-infrastructure-officers/infcom-management-group/standing-committee-measurements-instrumentation-and-traceability-sc-mint/joint-expert-team)"
    ]