diff --git a/Dockerfile b/Dockerfile
index f067223..578160c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.1-alpine3.17@sha256:18da4399cedd9e383beb6b104d43aa1d48bd41167e312bb5306d72c51bd11548 AS image
+FROM golang:1.21.2-alpine3.18 AS image
 LABEL maintainer="Caian Ertl <hi@caian.org>"
 
 FROM image AS base
@@ -20,6 +20,6 @@ RUN CGO_ENABLED=0 \
     GOOS=linux \
     go build -v -trimpath -installsuffix cgo -o list-github-stars -ldflags "-s -w"
 
-FROM alpine:3.17.2@sha256:e2e16842c9b54d985bf1ef9242a313f36b856181f188de21313820e177002501 AS runtime
+FROM alpine:3.18.4 AS runtime
 COPY --from=build /go/app/list-github-stars /usr/local/bin
 ENTRYPOINT ["list-github-stars"]