diff --git a/pkgs/development/python-modules/blis/default.nix b/pkgs/development/python-modules/blis/default.nix
index 596579f8148..5d4b9bcb5e2 100644
--- a/pkgs/development/python-modules/blis/default.nix
+++ b/pkgs/development/python-modules/blis/default.nix
@@ -20,11 +20,13 @@ buildPythonPackage rec {
     cython
   ];
 
+  propagatedBuildInputs = [
+    numpy
+  ];
+
 
   checkInputs = [
-    cython
     hypothesis
-    numpy
     pytest
   ];