diff --git a/pgp-verify-jar/Dockerfile b/pgp-verify-jar/Dockerfile
index fdab277..6c970fb 100644
--- a/pgp-verify-jar/Dockerfile
+++ b/pgp-verify-jar/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.19.1@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b
+FROM alpine:3.20.0@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd
 
 HEALTHCHECK NONE