diff --git a/prometheus-nginx-exporter/Dockerfile b/prometheus-nginx-exporter/Dockerfile
index 3e07e1e..9cc9890 100644
--- a/prometheus-nginx-exporter/Dockerfile
+++ b/prometheus-nginx-exporter/Dockerfile
@@ -12,7 +12,7 @@ RUN git clone -b $EXPORTER_VERSION --single-branch --depth 1 https://github.com/
 
 RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -o /out/nginx_exporter
 
-FROM alpine:3.20 AS prometheus-nginx-exporter
+FROM alpine:3.21 AS prometheus-nginx-exporter
 
 COPY --from=builder /out/* /