diff --git a/masque/file/oasis.py b/masque/file/oasis.py
index ed409fd..ab8d950 100644
--- a/masque/file/oasis.py
+++ b/masque/file/oasis.py
@@ -21,7 +21,7 @@ import logging
 import pathlib
 import gzip
 
-import numpy        # type: ignore
+import numpy
 import fatamorgana
 import fatamorgana.records as fatrec
 from fatamorgana.basic import PathExtensionScheme, AString, NString, PropStringReference