diff --git a/build-constraints.yaml b/build-constraints.yaml
index 39eae794..51c09454 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1528,7 +1528,7 @@ packages:
         - bimaps
         - BiobaseBlast
         - BiobaseENA
-        - BiobaseEnsembl
+        - BiobaseEnsembl < 0
         - BiobaseFasta
         - BiobaseHTTP
         - BiobaseTypes