diff --git a/lib/spack/docs/requirements.txt b/lib/spack/docs/requirements.txt
index 10e19f093e5eec..5cafa0c477c5f2 100644
--- a/lib/spack/docs/requirements.txt
+++ b/lib/spack/docs/requirements.txt
@@ -9,5 +9,5 @@ urllib3==2.0.7
 pytest==7.4.3
 isort==5.12.0
 black==23.10.1
-flake8==6.1.0
+flake8==7.3.0
 mypy==1.6.1