diff --git a/docker/Dockerfile b/docker/Dockerfile
index 9d805a5c1..a5d10a35b 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -2,7 +2,7 @@ ARG TARGETPLATFORM
 
 # Need to use Alpine 3.18.4 which uses Node 18 for arm/v6 and arm/v7, otherwise the build hangs.
 # See https://github.com/nodejs/docker-node/issues/2077
-FROM alpine:3.18.4 AS linux-arm-alpine
+FROM alpine:3.21.3 AS linux-arm-alpine
 FROM alpine:3.21 AS linux-arm64-alpine
 FROM alpine:3.21 AS linux-amd64-alpine
 FROM alpine:3.21 AS linux-riscv64-alpine