diff --git a/lib/spack/docs/requirements.txt b/lib/spack/docs/requirements.txt
index 18e2a26f13ffc6..a870e6ab2e2b6f 100644
--- a/lib/spack/docs/requirements.txt
+++ b/lib/spack/docs/requirements.txt
@@ -5,7 +5,7 @@ sphinx-rtd-theme==2.0.0
 python-levenshtein==0.23.0
 docutils==0.20.1
 pygments==2.17.2
-urllib3==2.1.0
+urllib3==2.2.1
 pytest==7.4.4
 isort==5.13.2
 black==23.12.1