1 files changed, 6 insertions, 1 deletions
diff --git a/setup.py b/setup.py
index 805062b0..bb2e8a09 100644
--- a/setup.py
+++ b/setup.py
@@ -76,7 +76,12 @@ setup(
     keywords=["ethos-u", "vela compiler", "tflite", "npu"],
     packages=find_namespace_packages(include=["ethosu.*"]),
     python_requires="~=3.6",  # We support only 3.6+
-    install_requires=["flatbuffers==1.11.0", "numpy>=1.16.6", "lxml>=4.5.1"],
+    install_requires=[
+        "flatbuffers==1.11.0",
+        "numpy>=1.16.6",
+        "numpy>=1.16.6,<1.19.4 ; platform_system=='Windows'",
+        "lxml>=4.5.1",
+    ],
     entry_points={"console_scripts": ["vela = ethosu.vela.vela:main"]},
     ext_modules=[mlw_module, tensor_allocator_module],
     setup_requires=["setuptools_scm"],