diff --git a/lib/spack/docs/requirements.txt b/lib/spack/docs/requirements.txt
index 2b8e73d6415574..85cf82d527d570 100644
--- a/lib/spack/docs/requirements.txt
+++ b/lib/spack/docs/requirements.txt
@@ -1,4 +1,4 @@
-sphinx==7.2.6
+sphinx==7.3.7
 sphinxcontrib-programoutput==0.17
 sphinx_design==0.5.0
 sphinx-rtd-theme==2.0.0