diff --git a/requirements.txt b/requirements.txt
index bf6e2be1..13b465d3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,4 @@ PyYAML==6.0
 greenery==4.0.0
 networkx==3.2.1
 beautifulsoup4==4.12.2
-lxml==5.1.0
+lxml==5.2.1
diff --git a/setup.cfg b/setup.cfg
index 4a98bcf8..3616c60c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -24,7 +24,7 @@ install_requires =
     greenery==4.0.0
     networkx==3.2.1
     beautifulsoup4==4.12.0
-    lxml==5.1.0
+    lxml==5.2.1
 
 python_requires = >=3.9