diff --git a/docker/docker-py3-kms/Dockerfile.arm32v7 b/docker/docker-py3-kms/Dockerfile.arm32v7
index 6e25c96..b43baba 100644
--- a/docker/docker-py3-kms/Dockerfile.arm32v7
+++ b/docker/docker-py3-kms/Dockerfile.arm32v7
@@ -3,7 +3,7 @@ FROM alpine AS builder
 RUN apk add curl && curl -L "https://github.com/balena-io/qemu/releases/download/v4.0.0%2Bbalena2/qemu-4.0.0.balena2-arm.tar.gz" | tar zxvf - -C . --strip-components 1
 
 # Switch to the target image
-FROM alpine:3.12
+FROM arm32v7/alpine:3.12
 
 # Import qemu from the preparation
 COPY --from=builder qemu-arm-static /usr/bin
diff --git a/docker/docker-py3-kms/Dockerfile.arm64v8 b/docker/docker-py3-kms/Dockerfile.arm64v8
index 561ea3b..31d1244 100644
--- a/docker/docker-py3-kms/Dockerfile.arm64v8
+++ b/docker/docker-py3-kms/Dockerfile.arm64v8
@@ -3,7 +3,7 @@ FROM alpine AS builder
 RUN apk add curl && curl -L "https://github.com/balena-io/qemu/releases/download/v4.0.0%2Bbalena2/qemu-4.0.0.balena2-aarch64.tar.gz" | tar zxvf - -C . --strip-components 1
 
 # Switch to the target image
-FROM alpine:3.12
+FROM arm64v8/alpine:3.12
 
 # Import qemu from the preparation
 COPY --from=builder qemu-aarch64-static /usr/bin