diff --git a/lib/spack/docs/requirements.txt b/lib/spack/docs/requirements.txt
index 10e19f093e5eec..cf07a1766a70a7 100644
--- a/lib/spack/docs/requirements.txt
+++ b/lib/spack/docs/requirements.txt
@@ -1,4 +1,4 @@
-sphinx==7.2.6
+sphinx==8.2.3
 sphinxcontrib-programoutput==0.17
 sphinx_design==0.5.0
 sphinx-rtd-theme==1.3.0