diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 24a2a4f..a2bd64a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -198,10 +198,16 @@ jobs:
         run: |
           VERSION="${GITHUB_REF_NAME#v}"
           DMG="Distribution/Insomnia-${VERSION}.dmg"
+          DMG_ROOT="${RUNNER_TEMP}/insomnia-dmg"
+
+          rm -rf "${DMG_ROOT}"
+          mkdir -p "${DMG_ROOT}"
+          ditto Distribution/Insomnia.app "${DMG_ROOT}/Insomnia.app"
+          ln -s /Applications "${DMG_ROOT}/Applications"
 
           hdiutil create \
             -volname "Insomnia" \
-            -srcfolder Distribution/Insomnia.app \
+            -srcfolder "${DMG_ROOT}" \
             -ov \
             -format UDZO \
             "${DMG}"
diff --git a/Sources/Insomnia/Update/UpdateChecker.swift b/Sources/Insomnia/Update/UpdateChecker.swift
index 3e0574c..53bf643 100644
--- a/Sources/Insomnia/Update/UpdateChecker.swift
+++ b/Sources/Insomnia/Update/UpdateChecker.swift
@@ -151,14 +151,15 @@ final class UpdateChecker {
         }
     }
 
-    // MARK: - Download and Install
+    // MARK: - Download Update
 
     /// Downloads the latest DMG and opens it for the user to install.
     ///
     /// The DMG is saved to `~/Downloads` and automatically mounted
     /// via `NSWorkspace` so the user can drag the app to Applications.
     /// File I/O is performed off the main thread to avoid UI jank.
-    func downloadAndInstall() async {
+    @MainActor
+    func downloadAndOpenInstaller() async {
         guard let url = downloadURL else {
             lastError = "No download URL available"
             return
diff --git a/Sources/Insomnia/Views/MenuBarView.swift b/Sources/Insomnia/Views/MenuBarView.swift
index de86103..4d292bb 100644
--- a/Sources/Insomnia/Views/MenuBarView.swift
+++ b/Sources/Insomnia/Views/MenuBarView.swift
@@ -177,7 +177,7 @@ struct MenuBarView: View {
             } else if updateChecker.downloadURL != nil {
                 // DMG available — offer direct download
                 Button("Download v\(version)") {
-                    Task { await updateChecker.downloadAndInstall() }
+                    Task { await updateChecker.downloadAndOpenInstaller() }
                 }
             } else {
                 // Update exists but no DMG asset — show version info only