diff --git a/Jenkinsfile b/Jenkinsfile
index bf36b99..7da6a5e 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -36,6 +36,23 @@ def writeBuildMetadata() {
     }
 }
 
+def releaseBaseUrl =
+    "https://dist.farmcontrol.app/jenkins/farmcontrol/farmcontrol-server"
+
+def runBuild(buildCommand) {
+    withEnv([
+        "VITE_BUILD_NUMBER=${env.BUILD_NUMBER ?: 'dev'}",
+        'NODE_ENV=production',
+        "ELECTROBUN_RELEASE_BASE_URL=${releaseBaseUrl}",
+    ]) {
+        if (isUnix()) {
+            sh buildCommand
+        } else {
+            bat buildCommand
+        }
+    }
+}
+
 def buildLinux() {
     node('ubuntu') {
         try {
@@ -70,9 +87,6 @@ def buildLinux() {
     }
 }
 
-def releaseBaseUrl =
-    "https://dist.farmcontrol.app/jenkins/farmcontrol/farmcontrol-server"
-
 def buildOnLabel(label, buildCommand) {
     return {
         node(label) {
@@ -98,11 +112,7 @@ def buildOnLabel(label, buildCommand) {
                 }
 
                 stage("Build (${label})") {
-                    if (isUnix()) {
-                        sh "VITE_BUILD_NUMBER=${env.BUILD_NUMBER} NODE_ENV=production ELECTROBUN_RELEASE_BASE_URL=${releaseBaseUrl} ${buildCommand}"
-                    } else {
-                        bat "set VITE_BUILD_NUMBER=${env.BUILD_NUMBER} && set NODE_ENV=production && set ELECTROBUN_RELEASE_BASE_URL=${releaseBaseUrl} && ${buildCommand}"
-                    }
+                    runBuild(buildCommand)
                 }
             }
 
diff --git a/package.json b/package.json
index 7e1219a..790e973 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "build:linux": "bun run cleanBuild && bun run build:server && bun run build:linux-binary && bun run build:linux-packages",
     "build:linux-binary": "bun scripts/build-linux-binary.mjs",
     "build:linux-packages": "bash scripts/build-linux-packages.sh",
-    "cleanBuild": "rm -rf build dist"
+    "cleanBuild": "bun scripts/clean-build.mjs"
   },
   "author": "Tom Butcher",
   "license": "ISC",
diff --git a/scripts/build-macos.mjs b/scripts/build-macos.mjs
index 35613b2..7d9774a 100644
--- a/scripts/build-macos.mjs
+++ b/scripts/build-macos.mjs
@@ -3,6 +3,7 @@ import { fileURLToPath } from "node:url";
 import path from "node:path";
 
 const rootDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const hostArch = process.arch === "arm64" ? "arm64" : "x64";
 const targetArchs = ["arm64", "x64"];
 
 function run(command, args, options = {}) {
@@ -18,15 +19,39 @@ function run(command, args, options = {}) {
   }
 }
 
+function getElectrobunInvocation(targetArch) {
+  const electrobunArgs = ["electrobun", "build", "--env=stable"];
+  const env = {
+    ...process.env,
+    ELECTROBUN_ARCH: targetArch,
+  };
+
+  if (targetArch === hostArch) {
+    return { command: "bun", args: electrobunArgs, env };
+  }
+
+  if (hostArch === "arm64" && targetArch === "x64") {
+    return { command: "arch", args: ["-x86_64", "bun", ...electrobunArgs], env };
+  }
+
+  if (hostArch === "x64" && targetArch === "arm64") {
+    return { command: "arch", args: ["-arm64", "bun", ...electrobunArgs], env };
+  }
+
+  return null;
+}
+
 run("bun", ["run", "build"]);
 
 for (const targetArch of targetArchs) {
-  console.log(`\n=== Building macOS ${targetArch} ===\n`);
+  const invocation = getElectrobunInvocation(targetArch);
+  if (!invocation) {
+    console.warn(
+      `Skipping macOS ${targetArch} build: unsupported cross-compile from ${hostArch}.`,
+    );
+    continue;
+  }
 
-  run("bun", ["electrobun", "build", "--env=stable"], {
-    env: {
-      ...process.env,
-      ELECTROBUN_ARCH: targetArch,
-    },
-  });
+  console.log(`\n=== Building macOS ${targetArch} ===\n`);
+  run(invocation.command, invocation.args, { env: invocation.env });
 }
diff --git a/scripts/clean-build.mjs b/scripts/clean-build.mjs
new file mode 100644
index 0000000..967ee6e
--- /dev/null
+++ b/scripts/clean-build.mjs
@@ -0,0 +1,9 @@
+import { rmSync } from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const rootDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+
+for (const dir of ["build", "dist"]) {
+  rmSync(path.join(rootDir, dir), { recursive: true, force: true });
+}