diff --git a/Dockerfile b/Dockerfile
index 461b689..34cdce3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM alpine:3.21 as rootfs-stage
+FROM alpine:3 as rootfs-stage
 
 # environment
 ENV REL=bullseye
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index f2bd24b..7db2933 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM alpine:3.21 as rootfs-stage
+FROM alpine:3 as rootfs-stage
 
 # environment
 ENV REL=bullseye