diff --git a/pkgs/development/python-modules/mxnet/default.nix b/pkgs/development/python-modules/mxnet/default.nix
index 3b9f692d7205..75f9ff539146 100644
--- a/pkgs/development/python-modules/mxnet/default.nix
+++ b/pkgs/development/python-modules/mxnet/default.nix
@@ -29,6 +29,7 @@ buildPythonPackage {
 
   pythonRelaxDeps = [
     "graphviz"
+    "numpy"
   ];
 
   LD_LIBRARY_PATH = lib.makeLibraryPath [ pkgs.mxnet ];