diff --git a/resolver/Dockerfile b/resolver/Dockerfile
index de9f8467270be37b492d9fad2823d03f2a68ff0e..31d76a4531a4366ad8fcaddbb6e173d0654fef6c 100644
--- a/resolver/Dockerfile
+++ b/resolver/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13
+FROM alpine:3.20
 # hadolint ignore=DL3018
 RUN echo '@testing http://dl-cdn.alpinelinux.org/alpine/edge/testing' >> /etc/apk/repositories && \
     echo '@community http://dl-cdn.alpinelinux.org/alpine/edge/community' >> /etc/apk/repositories && \