diff --git a/configs/default.nix b/configs/default.nix
index ddd3b5d..999474c 100644
--- a/configs/default.nix
+++ b/configs/default.nix
@@ -333,7 +333,7 @@
         pandoc
         haskellPackages.pandoc-citeproc
         # haskellPackages.patat
-        asciidoctor
+        unstable.asciidoctor
         proselint
       ] ++ [ # programming
         tokei