diff --git a/pkgs/gpx/trackanimation/default.nix b/pkgs/gpx/trackanimation/default.nix

index 2b45189873842ef19acac2ef5867a3b7ee242df1..2616cdf77d2909d9ee81f391eb9ec9bb8b0e7365 100644

--- a/pkgs/gpx/trackanimation/default.nix

+++ b/pkgs/gpx/trackanimation/default.nix

@@ -1,4 +1,4 @@

-{ lib, fetchFromGitHub, python3Packages, smopy }:

+{ lib, stdenv, fetchFromGitHub, python3Packages, smopy }:

python3Packages.buildPythonApplication rec {

pname = "trackanimation";