diff --git a/pkgs/development/python-modules/yacs/default.nix b/pkgs/development/python-modules/yacs/default.nix
index a105a18b2f65..e5712b240f8c 100644
--- a/pkgs/development/python-modules/yacs/default.nix
+++ b/pkgs/development/python-modules/yacs/default.nix
@@ -26,7 +26,7 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "Yet Another Configuration System";
     homepage = "https://github.com/rbgirshick/yacs";
-    license = licenses.apsl20;
+    license = licenses.asl20;
     maintainers = with maintainers; [ lucasew ];
   };
 }