diff --git a/setup.py b/setup.py
index ba213f4..0d262f2 100644
--- a/setup.py
+++ b/setup.py
@@ -18,8 +18,10 @@
     'django-forms-bootstrap',
     'django-leaflet',
     'django<4',
+    'gdal',
     'nansat',
     'netCDF4',
+    'numpy<2',
     'pythesint',
 ]