diff --git a/notebooks/wradlib/wradlib_clutter_beamblockage.ipynb b/notebooks/wradlib/wradlib_clutter_beamblockage.ipynb
index a72b051b0..e4fcd9cba 100644
--- a/notebooks/wradlib/wradlib_clutter_beamblockage.ipynb
+++ b/notebooks/wradlib/wradlib_clutter_beamblockage.ipynb
@@ -78,7 +78,10 @@
     "import cartopy.feature as cfeature\n",
     "import xradar as xd\n",
     "import hvplot\n",
-    "import hvplot.xarray"
+    "import hvplot.xarray\n",
+    "\n",
+    "\n",
+    "hvplot.extension(\"bokeh\")"
    ]
   },
   {