diff --git a/nix/configurations/vanadium/overlay.nix b/nix/configurations/vanadium/overlay.nix
index 18c1d901..07538f52 100644
--- a/nix/configurations/vanadium/overlay.nix
+++ b/nix/configurations/vanadium/overlay.nix
@@ -43,4 +43,15 @@ in
         ./patches/fcitx5-chinese-addons/disable-fullwidth.patch
         # Note: disabling pinyin helper breaks canjie
       ];
+      fcitx5-table-extra.__output.src = _: final.fetchFromGitHub {
+        owner = "leana8959";
+        repo = "fcitx5-table-extra";
+        rev = "3fb844280a5154389be17e422a98ad89cafccc38";
+        hash = "sha256-8iGNQYQH8tT3p6VedVBgfxHqXVLkFEiDEd1H7CBFXqg=";
+        fetchSubmodules = true;
+      };
+      fcitx5-table-extra.__output.nativeBuildInputs.__append = [ final.python3 ];
+      fcitx5-table-extra.__output.preConfigure.__prepend = ''
+        python3 ./generate.py
+      '';
     })