diff --git a/Dockerfile b/Dockerfile
index 9240b75..b7db714 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ WORKDIR /
 COPY . .
 RUN go install -ldflags "-X main.version=$(git describe --tags)"
 
-FROM alpine:3.19.1
+FROM alpine:3.21.1
 ENV LISTEN_ADDR=0.0.0.0:8080
 COPY --from=0 /go/bin/testserver /usr/local/bin/
 CMD [ "testserver" ]