diff --git a/lib/spack/docs/requirements.txt b/lib/spack/docs/requirements.txt
index a115051ce56..50a4d17dccd 100644
--- a/lib/spack/docs/requirements.txt
+++ b/lib/spack/docs/requirements.txt
@@ -8,6 +8,6 @@ pygments==2.15.1
 urllib3==2.0.3
 pytest==7.4.0
 isort==5.12.0
-black==23.1.0
+black==23.7.0
 flake8==6.0.0
 mypy==1.4.1