diff --git a/src/shadowbox/docker/Dockerfile b/src/shadowbox/docker/Dockerfile
index 81feb8e8..955506c1 100644
--- a/src/shadowbox/docker/Dockerfile
+++ b/src/shadowbox/docker/Dockerfile
@@ -32,7 +32,10 @@ COPY scripts scripts/
 COPY src src/
 COPY tsconfig.json ./
 COPY third_party third_party
-RUN ROOT_DIR=/ npm run action shadowbox/server/build
+
+ARG ARCH
+
+RUN ARCH=${ARCH} ROOT_DIR=/ npm run action shadowbox/server/build
 
 # shadowbox image
 FROM ${NODE_IMAGE}
diff --git a/src/shadowbox/docker/build.action.sh b/src/shadowbox/docker/build.action.sh
index 27373742..90de3ea9 100755
--- a/src/shadowbox/docker/build.action.sh
+++ b/src/shadowbox/docker/build.action.sh
@@ -18,16 +18,29 @@ export DOCKER_CONTENT_TRUST="${DOCKER_CONTENT_TRUST:-1}"
 # Enable Docker BuildKit (https://docs.docker.com/develop/develop-images/build_enhancements)
 export DOCKER_BUILDKIT=1
 
+# Docker image build architecture. Supported architectures: x86_64, arm64
+export ARCH=${ARCH:-x86_64}
+
 # Newer node images have no valid content trust data.
 # Pin the image node:16.18.0-alpine3.16 by hash.
 # See image at https://hub.docker.com/_/node/tags?page=1&name=16.18.0-alpine3.16
-readonly NODE_IMAGE="node@sha256:264861cd2f785a2b727e9f908065e8d9e9358fcc1308da3cb207d9cba69afee2"
+readonly NODE_IMAGE=$(
+    if [[ "${ARCH}" == "x86_64" ]]; then
+        echo "node@sha256:264861cd2f785a2b727e9f908065e8d9e9358fcc1308da3cb207d9cba69afee2" 
+    elif [[ "${ARCH}" == "arm64" ]]; then
+        echo "node@sha256:e2aff82eea79469af43ddd121f1c8f8c91a501e838534bd3991e225401b2c38d" 
+    else
+        echo "Unsupported architecture"
+        exit 1
+    fi
+)
 
 # Doing an explicit `docker pull` of the container base image to work around an issue where
 # Travis fails to pull the base image when using BuildKit. Seems to be related to:
 # https://github.com/moby/buildkit/issues/606 and https://github.com/moby/buildkit/issues/1397
 docker pull "${NODE_IMAGE}"
 docker build --force-rm \
+    --build-arg ARCH="${ARCH}" \
     --build-arg NODE_IMAGE="${NODE_IMAGE}" \
     --build-arg GITHUB_RELEASE="${TRAVIS_TAG:-none}" \
     -f src/shadowbox/docker/Dockerfile \
diff --git a/src/shadowbox/server/build.action.sh b/src/shadowbox/server/build.action.sh
index 66299466..bcc05f60 100755
--- a/src/shadowbox/server/build.action.sh
+++ b/src/shadowbox/server/build.action.sh
@@ -22,17 +22,18 @@ webpack --config=src/shadowbox/webpack.config.js ${BUILD_ENV:+--mode="${BUILD_EN
 
 # Install third_party dependencies
 readonly OS="$([[ "$(uname)" == "Darwin" ]] && echo "macos" || echo "linux")"
+export ARCH=${ARCH:-x86_64}
 readonly BIN_DIR="${OUT_DIR}/bin"
 mkdir -p "${BIN_DIR}"
 {
   cd "${ROOT_DIR}/third_party/prometheus"
-  make "bin/${OS}/prometheus"
-  cp "bin/${OS}/prometheus" "${BIN_DIR}/"
+  make "bin/${OS}-${ARCH}/prometheus"
+  cp "bin/${OS}-${ARCH}/prometheus" "${BIN_DIR}/"
 }
 {
   cd "${ROOT_DIR}/third_party/outline-ss-server"
-  make "bin/${OS}/outline-ss-server"
-  cp "bin/${OS}/outline-ss-server" "${BIN_DIR}/"
+  make "bin/${OS}-${ARCH}/outline-ss-server"
+  cp "bin/${OS}-${ARCH}/outline-ss-server" "${BIN_DIR}/"
 }
 
 # Copy shadowbox package.json
diff --git a/third_party/outline-ss-server/Makefile b/third_party/outline-ss-server/Makefile
index b678c2dc..c780a577 100644
--- a/third_party/outline-ss-server/Makefile
+++ b/third_party/outline-ss-server/Makefile
@@ -1,17 +1,23 @@
 VERSION=1.4.0
 
 .PHONY: all
-all: bin/linux/outline-ss-server bin/macos/outline-ss-server
+all: bin/linux-x86_64/outline-ss-server bin/linux-arm64/outline-ss-server bin/macos-x86_64/outline-ss-server bin/macos-arm64/outline-ss-server
 
-bin/linux/outline-ss-server: OS=linux
-bin/linux/outline-ss-server: SHA256=f51bcb6391cca0ae828620c429e698a3b7c409de2374c52f113ca9a525e021a8
+bin/linux-x86_64/outline-ss-server: OS=linux
+bin/linux-x86_64/outline-ss-server: SHA256=f51bcb6391cca0ae828620c429e698a3b7c409de2374c52f113ca9a525e021a8
 
-bin/macos/outline-ss-server: OS=macos
-bin/macos/outline-ss-server: SHA256=c85b2e8ae2d48482cbc101e54dcb7eed074a22c14a3a7301993e5f786b34081d
+bin/linux-arm64/outline-ss-server: OS=linux
+bin/linux-arm64/outline-ss-server: SHA256=14ae581414c9aab04253a385ef1854c003d09f545f6f8a3a55aa987f0c6d3859
+
+bin/macos-x86_64/outline-ss-server: OS=macos
+bin/macos-x86_64/outline-ss-server: SHA256=c85b2e8ae2d48482cbc101e54dcb7eed074a22c14a3a7301993e5f786b34081d
+
+bin/macos-arm64/outline-ss-server: OS=macos
+bin/macos-arm64/outline-ss-server: SHA256=9647712a7c732184f98b1e2e7f74281855afed2245ec922c4a24b54f0eb0ce72
 
 TEMPFILE := $(shell mktemp)
 bin/%/outline-ss-server:
-	node ../../src/build/download_file.mjs --url="https://github.com/Jigsaw-Code/outline-ss-server/releases/download/v$(VERSION)/outline-ss-server_$(VERSION)_$(OS)_x86_64.tar.gz" --out="$(TEMPFILE)" --sha256=$(SHA256)
+	node ../../src/build/download_file.mjs --url="https://github.com/Jigsaw-Code/outline-ss-server/releases/download/v$(VERSION)/outline-ss-server_$(VERSION)_$(OS)_$(ARCH).tar.gz" --out="$(TEMPFILE)" --sha256=$(SHA256)
 	mkdir -p "$(dir $@)"
 	tar -zx -f "$(TEMPFILE)" -C "$(dir $@)" "$(notdir $@)"
 	chmod +x "$@"
diff --git a/third_party/prometheus/Makefile b/third_party/prometheus/Makefile
index 85221e2b..d00624ef 100644
--- a/third_party/prometheus/Makefile
+++ b/third_party/prometheus/Makefile
@@ -1,19 +1,31 @@
 VERSION=2.37.1
 
+ifeq ($(ARCH),x86_64)
+    APP_ARCH=amd64
+else
+    APP_ARCH=arm64
+endif
+
 .PHONY: all
-all: bin/linux/prometheus bin/macos/prometheus
+all: bin/linux-x86_64/prometheus bin/linux-arm64/prometheus bin/macos-x86_64/prometheus bin/macos-arm64/prometheus
 
-bin/linux/prometheus: OS=linux
-bin/linux/prometheus: SHA256=753f66437597cf52ada98c2f459aa8c03745475c249c9f2b40ac7b3919131ba6
+bin/linux-x86_64/prometheus: OS=linux
+bin/linux-x86_64/prometheus: SHA256=753f66437597cf52ada98c2f459aa8c03745475c249c9f2b40ac7b3919131ba6
 
-bin/macos/prometheus: OS=darwin
-bin/macos/prometheus: SHA256=e03a43d98955ac3500f57353ea74b5df829074205f195ea6b3b88f55c4575c79
+bin/linux-arm64/prometheus: OS=linux
+bin/linux-arm64/prometheus: SHA256=b59a66fb5c7ec5acf6bf426793528a5789a1478a0dad8c64edc2843caf31b1b8
+
+bin/macos-x86_64/prometheus: OS=darwin
+bin/macos-x86_64/prometheus: SHA256=e03a43d98955ac3500f57353ea74b5df829074205f195ea6b3b88f55c4575c79
+
+bin/macos-arm64/prometheus: OS=darwin
+bin/macos-arm64/prometheus: SHA256=eb8a174c82a0fb6c84e81d9a73214318fb4a605115ad61505d7883d02e5a6f52
 
 bin/%/prometheus: TEMPFILE := $(shell mktemp)
 bin/%/prometheus:
-	node ../../src/build/download_file.mjs --url="https://github.com/prometheus/prometheus/releases/download/v$(VERSION)/prometheus-$(VERSION).$(OS)-amd64.tar.gz" --out="$(TEMPFILE)" --sha256=$(SHA256)
+	node ../../src/build/download_file.mjs --url="https://github.com/prometheus/prometheus/releases/download/v$(VERSION)/prometheus-$(VERSION).$(OS)-$(APP_ARCH).tar.gz" --out="$(TEMPFILE)" --sha256=$(SHA256)
 	mkdir -p "$(dir $@)"
-	tar -zx -f "$(TEMPFILE)" --strip-components=1 -C "$(dir $@)" prometheus-$(VERSION).$(OS)-amd64/prometheus
+	tar -zx -f "$(TEMPFILE)" --strip-components=1 -C "$(dir $@)" prometheus-$(VERSION).$(OS)-$(APP_ARCH)/prometheus
 	chmod +x "$@"
 	rm -f $(TEMPFILE)