From 3daf55baaa2f50c33caa69126a6e0fb9728a6492 Mon Sep 17 00:00:00 2001
From: Johannes Keller <jo.keller@fz-juelich.de>
Date: Tue, 4 Nov 2025 13:11:13 +0100
Subject: [PATCH] docs: secure jupyter-book v1

---
 docs/requirements.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/requirements.txt b/docs/requirements.txt
index b497855c3e..0c79071fc2 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
-jupyter-book
+jupyter-book < 2
 matplotlib
 numpy
 ghp-import
-ford
\ No newline at end of file
+ford