diff --git a/Dockerfile b/Dockerfile
index 5da81630..2fc0de6a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # REF: https://hub.docker.com/_/python
-FROM python:3.12.7-slim-bullseye
+FROM python:3.13.0-slim-bullseye
 
 LABEL "com.github.actions.name"="Spellcheck Action"
 LABEL "com.github.actions.description"="Check spelling of files in repository"
diff --git a/requirements.txt b/requirements.txt
index 1c8938d3..351538be 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ backrefs==5.6
 beautifulsoup4==4.12.2
 bracex==2.1.1
 html5lib==1.1
-lxml==4.9.3
+lxml==5.3.0
 Markdown==3.4.4
 pymdown-extensions==10.4
 pyspelling==2.10