diff --git a/lib/spack/docs/requirements.txt b/lib/spack/docs/requirements.txt
index 1c70fbee0def04..83559094bb185e 100644
--- a/lib/spack/docs/requirements.txt
+++ b/lib/spack/docs/requirements.txt
@@ -5,6 +5,6 @@ sphinx-copybutton==0.5.2
 sphinx-last-updated-by-git==0.3.8
 sphinx-sitemap==2.9.0
 furo==2025.12.19
-docutils==0.22.4
+docutils==0.23
 pygments==2.20.0
 pytest==9.0.3