diff --git a/config/electron-builder.config.cjs b/config/electron-builder.config.cjs
index 196a0fbd39f..6bfa89c8a39 100644
--- a/config/electron-builder.config.cjs
+++ b/config/electron-builder.config.cjs
@@ -105,6 +105,29 @@ const winSpeechNativeResource = {
   from: 'node_modules/sherpa-onnx-win-x64',
   to: 'node_modules/sherpa-onnx-win-x64'
 }
+// electron-builder replaces these defaults when `depends` is configured; retain
+// Electron's loader requirements alongside Orca's headless-host dependencies.
+const debElectronRuntimeDependencies = [
+  'libgtk-3-0',
+  'libnotify4',
+  'libnss3',
+  'libxss1',
+  'libxtst6',
+  'xdg-utils',
+  'libatspi2.0-0',
+  'libuuid1',
+  'libsecret-1-0'
+]
+const rpmElectronRuntimeDependencies = [
+  'gtk3',
+  'libnotify',
+  'nss',
+  'libXScrnSaver',
+  '(libXtst or libXtst6)',
+  'xdg-utils',
+  'at-spi2-core',
+  '(libuuid or libuuid1)'
+]
 
 /** @type {import('electron-builder').Configuration} */
 module.exports = {
@@ -260,6 +283,10 @@ module.exports = {
     if (!existsSync(resourcesDir)) {
       throw new Error(`Missing packaged resources directory: ${resourcesDir}`)
     }
+    // FpmTarget replaces this with deb/rpm while building those artifacts from the shared app tree.
+    if (context.electronPlatformName === 'linux') {
+      writeFileSync(join(resourcesDir, 'package-type'), 'AppImage')
+    }
     if (context.electronPlatformName === 'darwin') {
       const architectureByEnum = { 1: 'x64', 3: 'arm64' }
       const architecture = architectureByEnum[context.arch]
@@ -526,6 +553,7 @@ module.exports = {
     // Linux host — Chromium needs a display server even for offscreen rendering,
     // and serve starts Xvfb itself when present (see ensure-virtual-display.ts).
     depends: [
+      ...debElectronRuntimeDependencies,
       'python3',
       'python3-gi',
       'gir1.2-atspi-2.0',
@@ -547,9 +575,9 @@ module.exports = {
     // Why: see deb depends. RPM distros ship Xvfb as xorg-x11-server-Xvfb (there
     // is no `xvfb` package), so the name differs from the deb here.
     depends: [
+      ...rpmElectronRuntimeDependencies,
       'python3',
       'python3-gobject',
-      'at-spi2-core',
       'xdotool',
       'xclip',
       'xorg-x11-server-Xvfb'
diff --git a/config/scripts/electron-builder-config.test.mjs b/config/scripts/electron-builder-config.test.mjs
index 3bd14a3b095..3f055ce222d 100644
--- a/config/scripts/electron-builder-config.test.mjs
+++ b/config/scripts/electron-builder-config.test.mjs
@@ -10,6 +10,7 @@ const SRC_MAIN_DIR = join(REPO_ROOT, 'src', 'main')
 const require = createRequire(import.meta.url)
 const electronBuilderConfig = require('../electron-builder.config.cjs')
 const { FileMatcher } = require('app-builder-lib/out/fileMatcher')
+const FpmTarget = require('app-builder-lib/out/targets/FpmTarget').default
 const electronBuilderNativeRebuild = require('./electron-builder-native-rebuild.cjs')
 
 describe('electron-builder config', () => {
@@ -281,6 +282,16 @@ describe('electron-builder config', () => {
     })
   })
 
+  it('retains electron-builder runtime dependencies in deb and rpm packages', () => {
+    for (const target of ['deb', 'rpm']) {
+      const dependencies = electronBuilderConfig[target].depends
+      expect(dependencies).toEqual(
+        expect.arrayContaining(FpmTarget.prototype.getDefaultDepends(target))
+      )
+      expect(new Set(dependencies).size).toBe(dependencies.length)
+    }
+  })
+
   it('validates each AppImage before electron-builder publishes it', async () => {
     const root = await mkdtemp(join(tmpdir(), 'orca-electron-builder-appimage-'))
     try {
@@ -408,5 +419,17 @@ describe('electron-builder config', () => {
         expect(source).toContain(`value === '${target}'`)
       }
     })
+
+    it('keeps the pinned FpmTarget overwrite for configured deb and rpm artifacts', async () => {
+      const source = await readFile(
+        require.resolve('app-builder-lib/out/targets/FpmTarget'),
+        'utf8'
+      )
+
+      expect(source).toContain('path.join(resourceDir, "package-type"), target')
+      for (const target of RECOVERABLE_TARGETS) {
+        expect(electronBuilderConfig[target]).toBeDefined()
+      }
+    })
   })
 })