diff --git a/src/index.ts b/src/index.ts
index 34fec69..ef1dbfa 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -114,60 +114,68 @@ export const makeUniversalApp = async (opts: MakeUniversalOpts): Promise<void> =
         'While trying to merge mach-o files across your apps we found a mismatch, the number of mach-o files is not the same between the arm64 and x64 builds',
       );
     }
-
-    for (const file of x64Files.filter((f) => f.type === AppFileType.PLAIN)) {
-      const x64Sha = await sha(path.resolve(opts.x64AppPath, file.relativePath));
-      const arm64Sha = await sha(path.resolve(opts.arm64AppPath, file.relativePath));
-      if (x64Sha !== arm64Sha) {
-        d('SHA for file', file.relativePath, `does not match across builds ${x64Sha}!=${arm64Sha}`);
-        // The MainMenu.nib files generated by Xcode13 are deterministic in effect but not deterministic in generated sequence
-        if (path.basename(path.dirname(file.relativePath)) === 'MainMenu.nib') {
-          // The mismatch here is OK so we just move on to the next one
-          continue;
-        }
-        throw new Error(
-          `Expected all non-binary files to have identical SHAs when creating a universal build but "${file.relativePath}" did not`,
-        );
-      }
-    }
-
-    for (const machOFile of x64Files.filter((f) => f.type === AppFileType.MACHO)) {
-      const first = await fs.realpath(path.resolve(tmpApp, machOFile.relativePath));
-      const second = await fs.realpath(path.resolve(opts.arm64AppPath, machOFile.relativePath));
-
-      const x64Sha = await sha(path.resolve(opts.x64AppPath, machOFile.relativePath));
-      const arm64Sha = await sha(path.resolve(opts.arm64AppPath, machOFile.relativePath));
-      if (x64Sha === arm64Sha) {
-        if (
-          opts.x64ArchFiles === undefined ||
-          !minimatch(machOFile.relativePath, opts.x64ArchFiles, { matchBase: true })
-        ) {
-          throw new Error(
-            `Detected file "${machOFile.relativePath}" that's the same in both x64 and arm64 builds and not covered by the ` +
-              `x64ArchFiles rule: "${opts.x64ArchFiles}"`,
-          );
-        }
-
-        d(
-          'SHA for Mach-O file',
-          machOFile.relativePath,
-          `matches across builds ${x64Sha}===${arm64Sha}, skipping lipo`,
-        );
-        continue;
-      }
-
-      d('joining two MachO files with lipo', {
-        first,
-        second,
-      });
-      await spawn('lipo', [
-        first,
-        second,
-        '-create',
-        '-output',
-        await fs.realpath(path.resolve(tmpApp, machOFile.relativePath)),
-      ]);
-    }
+    
+    await Promise.all(
+      x64Files
+        .filter((f) => f.type === AppFileType.PLAIN)
+        .map(async (file) => {
+          const x64Sha = await sha(path.resolve(opts.x64AppPath, file.relativePath));
+          const arm64Sha = await sha(path.resolve(opts.arm64AppPath, file.relativePath));
+          if (x64Sha !== arm64Sha) {
+            d('SHA for file', file.relativePath, `does not match across builds ${x64Sha}!=${arm64Sha}`);
+            // The MainMenu.nib files generated by Xcode13 are deterministic in effect but not deterministic in generated sequence
+            if (path.basename(path.dirname(file.relativePath)) === 'MainMenu.nib') {
+              // The mismatch here is OK so we just move on to the next one
+              return;
+            }
+            throw new Error(
+              `Expected all non-binary files to have identical SHAs when creating a universal build but "${file.relativePath}" did not`,
+            );
+          }
+        })
+    )
+    
+    await Promise.all(
+      x64Files
+        .filter((f) => f.type === AppFileType.MACHO)
+        .map(async (machOFile) => {
+          const first = await fs.realpath(path.resolve(tmpApp, machOFile.relativePath));
+          const second = await fs.realpath(path.resolve(opts.arm64AppPath, machOFile.relativePath));
+
+          const x64Sha = await sha(path.resolve(opts.x64AppPath, machOFile.relativePath));
+          const arm64Sha = await sha(path.resolve(opts.arm64AppPath, machOFile.relativePath));
+          if (x64Sha === arm64Sha) {
+            if (
+              opts.x64ArchFiles === undefined ||
+              !minimatch(machOFile.relativePath, opts.x64ArchFiles, { matchBase: true })
+            ) {
+              throw new Error(
+                `Detected file "${machOFile.relativePath}" that's the same in both x64 and arm64 builds and not covered by the ` +
+                  `x64ArchFiles rule: "${opts.x64ArchFiles}"`,
+              );
+            }
+
+            d(
+              'SHA for Mach-O file',
+              machOFile.relativePath,
+              `matches across builds ${x64Sha}===${arm64Sha}, skipping lipo`,
+            );
+            return;
+          }
+
+          d('joining two MachO files with lipo', {
+            first,
+            second,
+          });
+          await spawn('lipo', [
+            first,
+            second,
+            '-create',
+            '-output',
+            await fs.realpath(path.resolve(tmpApp, machOFile.relativePath)),
+          ]);
+        })
+    )
 
     /**
      * If we don't have an ASAR we need to check if the two "app" folders are identical, if