diff --git a/Dockerfile b/Dockerfile
index 3580264786..5435396943 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -35,13 +35,13 @@ RUN make release-binary
 
 RUN xx-verify /go/bin/dex && xx-verify /go/bin/docker-entrypoint
 
-FROM alpine:3.19.1@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b AS stager
+FROM alpine:3.20.0@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd AS stager
 
 RUN mkdir -p /var/dex
 RUN mkdir -p /etc/dex
 COPY config.docker.yaml /etc/dex/
 
-FROM alpine:3.19.1@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b AS gomplate
+FROM alpine:3.20.0@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd AS gomplate
 
 ARG TARGETOS
 ARG TARGETARCH
@@ -54,7 +54,7 @@ RUN wget -O /usr/local/bin/gomplate \
   && chmod +x /usr/local/bin/gomplate
 
 # For Dependabot to detect base image versions
-FROM alpine:3.19.1@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b AS alpine
+FROM alpine:3.20.0@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd AS alpine
 FROM gcr.io/distroless/static-debian12:nonroot@sha256:e9ac71e2b8e279a8372741b7a0293afda17650d926900233ec3a7b2b7c22a246 AS distroless
 
 FROM $BASE_IMAGE