diff --git a/ensembl_genes/releases.py b/ensembl_genes/releases.py
index 6fac8e8..366c4c9 100644
--- a/ensembl_genes/releases.py
+++ b/ensembl_genes/releases.py
@@ -3,7 +3,11 @@
 
 @lru_cache
 def get_latest_ensembl_release() -> str:
-    """Return the latest Ensembl release as provided by bioversions."""
+    """
+    Return the latest Ensembl release as provided by bioversions.
+    Bioversions might lag behind the latest ensembl release due to errors,
+    such as <https://github.com/biopragmatics/bioversions/issues/33>.
+    """
     import requests
 
     url = "https://github.com/biopragmatics/bioversions/raw/main/src/bioversions/resources/versions.json"