diff --git a/Dockerfile b/Dockerfile
index aeeba197..9e69e2cb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # REF: https://hub.docker.com/_/python
 # Python 3.14.2-slim-trixie
-FROM python:3.14.2-slim-trixie@sha256:3955a7dd66ccf92b68d0232f7f86d892eaf75255511dc7e98961bdc990dc6c9b
+FROM python:3.14.3-slim-trixie@sha256:486b8092bfb12997e10d4920897213a06563449c951c5506c2a2cfaf591c599f
 
 LABEL "com.github.actions.name"="Spellcheck Action"
 LABEL "com.github.actions.description"="Check spelling of files in repository"