diff --git a/pkgs/development/python-modules/python-can/default.nix b/pkgs/development/python-modules/python-can/default.nix
index 2d862212805b..210f66365d91 100644
--- a/pkgs/development/python-modules/python-can/default.nix
+++ b/pkgs/development/python-modules/python-can/default.nix
@@ -42,6 +42,8 @@ buildPythonPackage rec {
     wrapt
   ];
 
+  pythonRelaxDeps = [ "wrapt" ];
+
   optional-dependencies = {
     serial = [ pyserial ];
     seeedstudio = [ pyserial ];