diff --git a/workbooks/celltype_annotation_besca.ipynb b/workbooks/celltype_annotation_besca.ipynb
index a937889a..318614da 100644
--- a/workbooks/celltype_annotation_besca.ipynb
+++ b/workbooks/celltype_annotation_besca.ipynb
@@ -135,6 +135,15 @@
     "        clusters = \"leiden_citeseq\""
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "adata.uns['log1p'] = {'base' : None} # Fix for bug related to scanpy version scverse/scanpy#2239"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,