diff --git a/nixos/pkgs/privatestorage/default.nix b/nixos/pkgs/privatestorage/default.nix
index d5a9e61ecc782ffc71bb7e62f387060c4238429d..274eff5752dffb06c1a939510d502f6efe17818e 100644
--- a/nixos/pkgs/privatestorage/default.nix
+++ b/nixos/pkgs/privatestorage/default.nix
@@ -3,7 +3,7 @@ let
   repo-data = lib.importJSON ./repo.json;
   repo = fetchFromGitHub (builtins.removeAttrs repo-data [ "branch" ]);
   zk = import repo;
-  zkapauthorizer = zk.outputs.packages.x86_64-linux.zkapauthorizer-python39-tahoe_1_18_0;
+  zkapauthorizer = zk.outputs.packages.x86_64-linux.zkapauthorizer-python310-tahoe_1_17_1;
   python = zkapauthorizer.passthru.python;
 in
   python.withPackages (ps: [ zkapauthorizer ] )