diff --git a/src/content/docs/local-setup/local-celery.mdx b/src/content/docs/local-setup/local-celery.mdx
index 3fc8574..57c4e85 100644
--- a/src/content/docs/local-setup/local-celery.mdx
+++ b/src/content/docs/local-setup/local-celery.mdx
@@ -34,7 +34,7 @@ You need **three terminals** for the backend, plus one for the frontend:
 ## Prerequisites
 
 - **Python 3.10+** with [Poetry](https://python-poetry.org/docs/) installed
-- **Node.js 20+** with npm
+- **Node.js 24.x or >=26 (even-numbered major versions only; odd majors like 25 are not supported)** with npm. The default version is pinned in `.nvmrc` in the `ui` repo.
 - **Docker** (for Redis)
 - **Git**
 
diff --git a/src/content/docs/local-setup/local-frontend-demo.mdx b/src/content/docs/local-setup/local-frontend-demo.mdx
index 449008b..e27d6dd 100644
--- a/src/content/docs/local-setup/local-frontend-demo.mdx
+++ b/src/content/docs/local-setup/local-frontend-demo.mdx
@@ -21,7 +21,7 @@ is simpler — no dependency management and easier teardown.
 
 ## Prerequisites
 
-- **Node.js 20+** with npm
+- **Node.js 24.x or >=26 (even-numbered major versions only; odd majors like 25 are not supported)** with npm. The default version is pinned in `.nvmrc` in the `ui` repo.
 - **Python 3.10+** with pip and venv — needed to build the converter into a Pyodide/WebAssembly module
 - **Git**
 
diff --git a/src/content/docs/local-setup/local-slurm.mdx b/src/content/docs/local-setup/local-slurm.mdx
index 8c0bf7b..7556a80 100644
--- a/src/content/docs/local-setup/local-slurm.mdx
+++ b/src/content/docs/local-setup/local-slurm.mdx
@@ -31,7 +31,7 @@ You need **three terminals** for the backend, plus one for the frontend:
 ## Prerequisites
 
 - **Python 3.10+** with [Poetry](https://python-poetry.org/docs/) installed
-- **Node.js 20+** with npm
+- **Node.js 24.x or >=26 (even-numbered major versions only; odd majors like 25 are not supported)** with npm. The default version is pinned in `.nvmrc` in the `ui` repo.
 - **Docker**
 - **Git**