diff --git a/requirements.txt b/requirements.txt
index eb022f14f..cd81e2f86 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ urllib3[secure]==2.2.3
 yamale==4.0.4
 markdown==3.7
 ruamel.yaml==0.18.14
-lxml==4.8.0
+lxml==6.0.0
 # For emoji
 sphinxemoji==0.3.1
 # For atom feed support