diff --git a/hosts/thrall/default.nix b/hosts/thrall/default.nix
index 8c045c8..537bd2a 100644
--- a/hosts/thrall/default.nix
+++ b/hosts/thrall/default.nix
@@ -296,6 +296,10 @@ in {
       PAPERLESS_URL = "https://docs.failco.de";
       PAPERLESS_CONSUMER_RECURSIVE = true;
       PAPERLESS_CONSUMER_SUBDIRS_AS_TAGS = true;
+
+      # workaround for classification getting stuck, see
+      # https://github.com/NixOS/nixpkgs/issues/240591#issuecomment-1915678490
+      LD_LIBRARY_PATH = "${lib.getLib pkgs.mkl}/lib";
     };
   };