diff --git a/Dockerfile b/Dockerfile
index 8dec163..d18c574 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/alpine:3.18.2
+FROM docker.io/library/alpine:3.18.3
 RUN apk add --no-cache ca-certificates
 COPY saml-test-sp /
 EXPOSE 9009