diff --git a/requirements.txt b/requirements.txt
index 1efed2a..ef5a536 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 avro==1.11.3
 dpkt==1.9.8
-lxml==4.9.3
+lxml==5.3.0
 numpy==1.26.1
 fastavro==1.8.4
 six>=1.12.0
diff --git a/setup.cfg b/setup.cfg
index af3de85..4c27581 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,7 +44,7 @@ python_requires = >= 3.6
 install_requires =
     avro==1.11.1
     dpkt==1.9.8
-    lxml==4.9.2
+    lxml==5.3.0
     numpy==1.24.1
     fastavro==1.7.0
     six>=1.12.0