diff --git a/lib/spack/docs/requirements.txt b/lib/spack/docs/requirements.txt
index 355f612d1f0d21..b1b8d5d3c3ae40 100644
--- a/lib/spack/docs/requirements.txt
+++ b/lib/spack/docs/requirements.txt
@@ -1,4 +1,4 @@
-sphinx==6.2.1
+sphinx==7.2.3
 sphinxcontrib-programoutput==0.17
 sphinx_design==0.5.0
 sphinx-rtd-theme==1.2.2