diff --git a/internal/generate-tree.mjs b/internal/generate-tree.mjs
index fa3a59e5b..09a50beee 100644
--- a/internal/generate-tree.mjs
+++ b/internal/generate-tree.mjs
@@ -1771,6 +1771,11 @@ function main() {
       'boundaries/world-adm0-web.geojson',           // the web copies the interactive maps fetch
       'boundaries/gb-IND-ADM1-web.geojson',
       'boundaries/gb-IND-ADM1-full-web.geojson',
+      // The map-sheet generator's two print-time fetches (library/packet/posterSheets.js): the capitals and
+      // cities it draws, and the generator itself (sha384-pinned in poster-render.integrity.js). Both were
+      // gathered into the pool above but, missing here, never reached the tree: a print would 404.
+      'boundaries/ne-places.json',
+      'lib/poster-render.js',
       // people-groups — all-people-groups.vue (the slim JSON only; NOT the 16 MB CSV,
       // which no element fetches and which dropin.exclude already withholds).
       'people-groups/people-groups-slim.json',