diff --git a/setup.cfg b/setup.cfg
index 8ff502f..d3fa2fd 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -37,7 +37,7 @@ install_requires =
 
     # arm64 on Darwin supports Python 3.8 and above requires numpy>=1.20.0
     numpy==1.20.0; python_version=='3.8' and platform_machine=='arm64' and platform_system=='Darwin'
-    numpy==1.20.0; python_version=='3.9' and platform_machine=='arm64' and platform_system=='Darwin'
+    numpy==1.21.2; python_version=='3.9' and platform_machine=='arm64' and platform_system=='Darwin'
 
     # default numpy requirements
     numpy==1.13.3; python_version=='3.5' and platform_machine!='aarch64' and platform_system!='AIX'