diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index b81c1bb..1a530e8 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,4 +1,4 @@
-ARG BUILD_BASE_IMAGE
+ARG BUILD_BASE_IMAGE=alpine:latest
 FROM ${BUILD_BASE_IMAGE} AS builder
 
 ARG BUILD_TAG
@@ -26,7 +26,7 @@ RUN apt update && \
     ./build.sh -c gcc -b release
 
 
-ARG BUILD_RUNTIME_IMAGE
+ARG BUILD_RUNTIME_IMAGE=alpine:latest
 FROM ${BUILD_RUNTIME_IMAGE}
 
 ARG BUILD_APP_USER