diff --git a/requirements.in b/requirements.in
index 1c05dade..4045e05a 100644
--- a/requirements.in
+++ b/requirements.in
@@ -13,7 +13,7 @@ Django>=4.2
 djangorestframework>=3.10.3,<3.16
 importlib-metadata==8.5.0
 jsonschema==4.23.0
-lxml==5.3.0
+lxml==5.3.1
 marshmallow==3.22.0
 pydantic==2.10.6
 pyOpenSSL==25.0.0
diff --git a/requirements.txt b/requirements.txt
index 0603195c..9e9856c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,7 +47,7 @@ jsonschema==4.23.0
     # via -r requirements.in
 jsonschema-specifications==2023.12.1
     # via jsonschema
-lxml==5.3.0
+lxml==5.3.1
     # via
     #   -r requirements.in
     #   signxml