diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index b3308817473..525b2eeb951 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -15468,7 +15468,7 @@ with pkgs;
     inherit (vamp) vampSDK;
   };
 
-  inherit (python34Packages) arelle;
+  inherit (python3Packages) arelle;
 
   ario = callPackage ../applications/audio/ario { };