diff --git a/sleep/Dockerfile b/sleep/Dockerfile
index 712bef6d2c7e3b5cf5b057a7cccc71d86dc32bd0..d53d02d47cec95a0ddc2ee18acb6805e82bdcb3d 100644
--- a/sleep/Dockerfile
+++ b/sleep/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.14
+FROM alpine:3.16
 COPY --chown=root:root entrypoint /usr/local/bin/entrypoint
 USER nobody
 ENTRYPOINT ["entrypoint"]