diff --git a/doc/manual/default.nix b/doc/manual/default.nix
index 3d0e7a4..6a8ec61 100644
--- a/doc/manual/default.nix
+++ b/doc/manual/default.nix
@@ -94,8 +94,7 @@ in rec {
         --stylesheet highlightjs/mono-blue.css \
         --script ./highlightjs/highlight.pack.js \
         --script ./highlightjs/loader.js \
-        --toc-depth 1 \
-        --chunk-toc-depth 1 \
+        --sidebar-depth 1 \
         ./manual.md \
         $dst/index.html