diff --git a/requirements-doc.txt b/requirements-doc.txt
index 4b92131..462e582 100644
--- a/requirements-doc.txt
+++ b/requirements-doc.txt
@@ -4,3 +4,4 @@ sphinx>=4  # improved support for docutils>=0.17
 sphinx_rtd_theme>=1  # <1 does not work with docutils>=0.17
 sphinx-gallery
 sphinx-copybutton
+numpy==2.0