diff --git a/doc/requirements.txt b/doc/requirements.txt
index 40313375..1ad69dbd 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,7 +3,7 @@ asttokens==3.0.0 ; python_version >= "3.9" and python_version < "3.15"
 attrs==25.1.0 ; python_version >= "3.9" and python_version < "3.15"
 babel==2.17.0 ; python_version >= "3.9" and python_version < "3.15"
 beautifulsoup4==4.13.3 ; python_version >= "3.9" and python_version < "3.15"
-bleach[css]==6.2.0 ; python_version >= "3.9" and python_version < "3.15"
+bleach[css]==6.4.0 ; python_version >= "3.9" and python_version < "3.15"
 certifi==2025.1.31 ; python_version >= "3.9" and python_version < "3.15"
 cffi==1.17.1 ; python_version >= "3.9" and python_version < "3.15" and implementation_name == "pypy"
 charset-normalizer==3.4.1 ; python_version >= "3.9" and python_version < "3.15"