diff --git a/pgp-verify-jar/Dockerfile b/pgp-verify-jar/Dockerfile
index 15db611..60cdc09 100644
--- a/pgp-verify-jar/Dockerfile
+++ b/pgp-verify-jar/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 
 # hadolint ignore=DL3018
 RUN apk --update --no-cache add bash curl gnupg \