diff --git a/pkgs/development/python-modules/javaobj-py3/default.nix b/pkgs/development/python-modules/javaobj-py3/default.nix
index fae3c2f3958f..421b63a6640c 100644
--- a/pkgs/development/python-modules/javaobj-py3/default.nix
+++ b/pkgs/development/python-modules/javaobj-py3/default.nix
@@ -2,27 +2,30 @@
 , fetchPypi
 , isPy27
 , lib
+, numpy
 }:
 
 buildPythonPackage rec {
   pname = "javaobj-py3";
-  version = "0.4.1";
+  version = "0.4.2";
   disabled = isPy27;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "419ff99543469e68149f875abb0db5251cecd350c03d2bfb4c94a5796f1cbc14";
+    sha256 = "sha256-7Tsf/P058WVynLU1h8ygKrC/pMMyyDepLV/+au9cgBA=";
   };
 
+  propagatedBuildInputs = [ numpy ];
+
   # Tests assume network connectivity
   doCheck = false;
 
-  meta = {
+  pythonImportsCheck = [ "javaobj" ];
+
+  meta = with lib; {
     description = "Module for serializing and de-serializing Java objects";
     homepage = "https://github.com/tcalmant/python-javaobj";
-    license = lib.licenses.asl20;
-    maintainers = with lib.maintainers; [
-      kamadorueda
-    ];
+    license = licenses.asl20;
+    maintainers = with maintainers; [ kamadorueda ];
   };
 }