diff --git a/requirements.txt b/requirements.txt
index 40fa3164..64582d57 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ Sphinx<9
 sphinx_rtd_theme==2.0.0
 lxml==5.3.0
 requests==2.32.3
-xmlschema==3.4.2
+xmlschema==3.4.3
 jinja2==3.1.4
 click<8.2
 -e .