diff --git a/package.json b/package.json
index 951e1d1a9015580842955f489f243d01c4ee2940..dd8296c552a39bc74757f5d1185af33d3427d1a5 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "mkdocs": "bash scripts/prepare_mkdocs.sh; cd build; python3 -m mkdocs build -f mkdocs-fr.yml && python3 -m mkdocs build -f mkdocs-en.yml && cd .. && node scripts/mkdocs-postprocess.js",
     "mkdocs2pdf": "node scripts/extract-nghyd-version.js build/cassiopee_version.tex && python3 scripts/mkdocs2pdf.py && node scripts/mkdocs2pdf-postprocess.js && bash scripts/check-pdf-docs.sh",
     "clean": "rm -rf build dist release src/date_revision.ts src/assets/docs docs/pdf_build",
+    "build-jalhyd": "cd jalhyd && npm run build; cd ..",
     "preprocess": "mkdir -p build; node scripts/preprocessors.js; npm run service-worker-version;",
     "start": "npm run preprocess && npm run mkdocs && npm run ng serve -- --host 127.0.0.1 --poll 5000",
     "build-no-pdf": "npm run preprocess && npm run mkdocs && npm run ng build -- --configuration production",