diff --git a/pkgs/applications/science/machine-learning/labelimg/default.nix b/pkgs/applications/science/machine-learning/labelimg/default.nix
index 802a03bd4c7a..340073b016e3 100644
--- a/pkgs/applications/science/machine-learning/labelimg/default.nix
+++ b/pkgs/applications/science/machine-learning/labelimg/default.nix
@@ -6,6 +6,9 @@
       url = "https://github.com/tzutalin/labelImg/archive/v${version}.tar.gz";
       sha256 = "126kc4r7xm9170kh7snqsfkkc868m5bcnswrv7b4cq9ivlrdwbm4";
     };
+    nativeBuildInputs = with python2Packages; [
+      pyqt4
+    ];
     propagatedBuildInputs = with python2Packages; [
       pyqt4
       lxml