diff --git a/setup.py b/setup.py
index 7b321ecbcd..555f299b19 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 from setuptools import find_packages, setup
 
-requires = ['numpy >1.20', 'pillow', 'pyresample >=1.24.0', 'trollsift',
+requires = ['numpy >=1.21', 'pillow', 'pyresample >=1.24.0', 'trollsift',
             'trollimage >=1.20', 'pykdtree', 'pyyaml >=5.1', 'xarray >=0.10.1, !=0.13.0',
             'dask[array] >=0.17.1', 'pyproj>=2.2', 'zarr', 'donfig', 'appdirs',
             'packaging', 'pooch', 'pyorbital']