diff --git a/lib/spack/docs/requirements.txt b/lib/spack/docs/requirements.txt
index 234202075c5..08f4d522b83 100644
--- a/lib/spack/docs/requirements.txt
+++ b/lib/spack/docs/requirements.txt
@@ -9,5 +9,5 @@ urllib3==2.0.4
 pytest==7.4.0
 isort==5.12.0
 black==23.7.0
-flake8==6.0.0
+flake8==6.1.0
 mypy==1.4.1