diff --git a/pkgs/development/python-modules/env-canada/default.nix b/pkgs/development/python-modules/env-canada/default.nix
index d2424a76c004..ce07ef171e1f 100644
--- a/pkgs/development/python-modules/env-canada/default.nix
+++ b/pkgs/development/python-modules/env-canada/default.nix
@@ -2,6 +2,7 @@
   lib,
   aiohttp,
   buildPythonPackage,
+  defusedxml,
   fetchFromGitHub,
   geopy,
   imageio,
@@ -33,6 +34,7 @@ buildPythonPackage rec {
 
   dependencies = [
     aiohttp
+    defusedxml
     geopy
     imageio
     lxml