diff --git a/src/anemoi/registry/commands/update.py b/src/anemoi/registry/commands/update.py
index 9b742c2..267c443 100644
--- a/src/anemoi/registry/commands/update.py
+++ b/src/anemoi/registry/commands/update.py
@@ -308,7 +308,6 @@ def _(d):
 
         z = zarr.open(path, mode="a")
         LOG.info(f"Updating metadata: {name}")
-        z.attrs.clear()
         z.attrs.update(entry_metadata)