diff --git a/.github/workflows/manual-nixos-v2.yml b/.github/workflows/manual-nixos-v2.yml
index c83d53e8a51a..687dc6eaf64e 100644
--- a/.github/workflows/manual-nixos-v2.yml
+++ b/.github/workflows/manual-nixos-v2.yml
@@ -5,7 +5,11 @@ on:
     branches:
       - master
     paths:
-      - 'nixos/**'
+      - "nixos/**"
+      # Also build when the nixpkgs doc changed, since we take things like
+      # the release notes and some css and js files from there.
+      # See nixos/doc/manual/default.nix
+      - "doc/**"
 
 permissions: {}