diff --git a/compilerr.js b/compilerr.js
index f8daee5..cfe6eb1 100644
--- a/compilerr.js
+++ b/compilerr.js
@@ -12,7 +12,7 @@ const snapshots = require('./snapshots');
 const temp = require('temp');
 temp.track();
 
-const compile = function(srcDir, moduleDir, paths, packageInfo, log, options) {
+const compile = function(srcDir, moduleDir, paths, packageInfo, rVersion, rArch, log, options) {
 
     options = options || {};
 
@@ -32,10 +32,9 @@ const compile = function(srcDir, moduleDir, paths, packageInfo, log, options) {
         break;
     }
 
-    let rVersion = packageInfo.rVersion;
     let snapshot = snapshots[rVersion];
     let included = (packageInfo.name === 'jmv' ? snapshot.base_packages : snapshot.jmv_packages);
-    let buildDir = path.join(srcDir, 'build', `R${ rVersion }-${ platform }`);
+    let buildDir = path.join(srcDir, 'build', `R${ packageInfo.rVersion }-${ platform }`);
     let mirror = options.mirror || snapshot.mran_url;
 
     try {
@@ -193,6 +192,10 @@ const compile = function(srcDir, moduleDir, paths, packageInfo, log, options) {
         let installed = fs.readdirSync(buildDir);
 
         let rv = rVersion.substring(0,3)
+        if (rArch === 'x64')
+            rv = `${ rv }-x86_64`;
+        else if (rArch === 'arm64')
+            rv = `${ rv }-arm64`;
 
         const subs = [
             [`/Library/Frameworks/R.framework/Versions/${ rv }/Resources/lib/libR.dylib`,
diff --git a/index.js b/index.js
index 658693e..0653030 100755
--- a/index.js
+++ b/index.js
@@ -221,7 +221,8 @@ try {
         rVersionOutput = child_process.execSync(cmd, { encoding: 'UTF-8', env: env });
     }
 
-    let rVersion = /R version ([0-9]+\.[0-9]+\.[0-9]+)/g.exec(rVersionOutput);
+    let rVersion = /^R version ([0-9]+\.[0-9]+\.[0-9]+)/.exec(rVersionOutput);
+    let rArch = '';
 
     if (rVersion === null && process.platform === 'win32') {
         rVersion = [ undefined, '3.4.1' ];
@@ -231,6 +232,19 @@ try {
         throw 'unable to determine R version';
     rVersion = rVersion[1];
 
+    const versionParts = /^([0-9]+)\.([0-9]+)/.exec(rVersion);
+    const versionAsInt = 100 * parseInt(versionParts[1]) + parseInt(versionParts[2]);
+
+    let rVersionAndArch = rVersion;
+    if (process.platform === 'darwin' && versionAsInt > 401) {  // macOS + > 4.1
+        let arch = /Platform: ([^-]+)/.exec(rVersionOutput)[1];
+        if (arch === 'aarch64')
+            rArch = 'arm64';
+        else if (arch == 'x86_64')
+            rArch = 'x64';
+        rVersionAndArch = `${ rVersion }-${ rArch }`;
+    }
+
     let mirror;
     let skipRemotes = args['skip-remotes'];
 
@@ -522,13 +536,13 @@ try {
 
         if (isBuilding || isInstallingTo) {
 
-            packageInfoLite.rVersion = rVersion;
+            packageInfoLite.rVersion = rVersionAndArch;
             content = '---\n' + yaml.safeDump(packageInfoLite) + '\n...\n';
 
             fs.writeFileSync(path.join(modDir, 'jamovi.yaml'), content);
             console.log('wrote: jamovi.yaml');
 
-            packageInfo.rVersion = rVersion;
+            packageInfo.rVersion = rVersionAndArch;
             content = '---\n' + yaml.safeDump(packageInfo) + '\n...\n';
 
             fs.writeFileSync(path.join(modDir, 'jamovi-full.yaml'), content);
@@ -543,7 +557,7 @@ try {
             }
 
             log.debug('compiling R package');
-            compileR(srcDir, modDir, paths, packageInfo, log, { mirror, skipRemotes, skipDeps: args['skip-deps'] });
+            compileR(srcDir, modDir, paths, packageInfo, rVersion, rArch, log, { mirror, skipRemotes, skipDeps: args['skip-deps'] });
             log.debug('compiled');
 
             if (isBuilding) {