diff --git a/src/integrations/speech-transcribe.js b/src/integrations/speech-transcribe.js
index ba09a0d..09a6e80 100644
--- a/src/integrations/speech-transcribe.js
+++ b/src/integrations/speech-transcribe.js
@@ -181,6 +181,7 @@ async function buildAndRunTranscriber({ audioPath, locale = "en-US" }) {
     fputsStderr(`Compiling transcriber for ${audioPath}...\n`);
     const compileCmd = await execFileAsync("/usr/bin/swiftc", [
       "-O",
+      "-parse-as-library",
       swiftFile,
       "-o", binFile,
       "-framework", "AVFoundation",
@@ -258,21 +259,31 @@ export async function speechListLocales() {
   const tmpDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), "speech-locale-"));
   const swiftFile = path.join(tmpDir, "ListLocales.swift");
   const binFile = path.join(tmpDir, "list_bin");
-  const swiftSrc = String.raw`
-import Speech
+  const swiftSrc = `import Speech
 import Foundation
 
 @main
 struct L {
     static func main() async {
-        // Ensure we trigger asset inventory awareness
+        let isAvail = SpeechTranscriber.isAvailable
+        let supported: [String]
+        let installed: [String]
+        // These may be async in newer SDKs
+        // Try sync first, fallback to await if needed via Any
+        if #available(macOS 26.0, *) {
+            supported = await SpeechTranscriber.supportedLocales.map { $0.identifier }.sorted()
+            installed = await SpeechTranscriber.installedLocales.map { $0.identifier }.sorted()
+        } else {
+            supported = SpeechTranscriber.supportedLocales.map { $0.identifier }.sorted()
+            installed = SpeechTranscriber.installedLocales.map { $0.identifier }.sorted()
+        }
         let payload: [String: Any] = [
-            "isAvailable": SpeechTranscriber.isAvailable,
-            "supported": SpeechTranscriber.supportedLocales.map{$0.identifier}.sorted(),
-            "installed": SpeechTranscriber.installedLocales.map{$0.identifier}.sorted(),
+            "isAvailable": isAvail,
+            "supported": supported,
+            "installed": installed,
             "macOS": ProcessInfo.processInfo.operatingSystemVersionString,
             "maxReserved": AssetInventory.maximumReservedLocales,
-            "reserved": AssetInventory.reservedLocales.map{$0.identifier}
+            "reserved": AssetInventory.reservedLocales.map { $0.identifier }
         ]
         let d = try! JSONSerialization.data(withJSONObject: payload, options: [.prettyPrinted, .sortedKeys])
         FileHandle.standardOutput.write(d)
@@ -281,13 +292,13 @@ struct L {
 `;
   await writeFile(swiftFile, swiftSrc, "utf8");
   try {
-    await execFileAsync("/usr/bin/swiftc", ["-O", swiftFile, "-o", binFile, "-framework", "Speech"], { timeout: 30_000 });
+    await execFileAsync("/usr/bin/swiftc", ["-O", "-parse-as-library", swiftFile, "-o", binFile, "-framework", "Speech"], { timeout: 30_000 });
     const { stdout } = await execFileAsync(binFile, [], { timeout: 15_000 });
     await cleanup(tmpDir);
     return JSON.parse(stdout);
   } catch (e) {
     await cleanup(tmpDir);
-    throw new Error(`List locales failed: ${e.stderr || e.message}`);
+    throw new Error(`List locales failed: ${e.stderr || e.message}\n${e.stdout || ""}`);
   }
 }