diff --git a/vendor/github.com/coreos/etcd/Dockerfile-release b/vendor/github.com/coreos/etcd/Dockerfile-release
index 736445fc..f5a037ec 100644
--- a/vendor/github.com/coreos/etcd/Dockerfile-release
+++ b/vendor/github.com/coreos/etcd/Dockerfile-release
@@ -1,4 +1,4 @@
-FROM alpine:latest
+FROM alpine:3.15
 
 ADD etcd /usr/local/bin/
 ADD etcdctl /usr/local/bin/