diff --git a/package.json b/package.json
index b197fd815a..0ca46a6a58 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "test": "run-s test-node test-electron test-lint-intl test-eslint",
     "test-electron": "node ts/scripts/test-electron.js",
     "test-release": "node ts/scripts/test-release.js",
-    "test-node": "cross-env LANG=en-us electron-mocha --timeout 10000 --file test/setup-test-node.js --recursive ts/test-node ts/test-both",
+    "test-node": "cross-env LANG=en-us electron-mocha --timeout 10000 --main test/fix-linux-gtk.js --file test/setup-test-node.js --recursive ts/test-node ts/test-both",
     "test-mock": "mocha --require ts/test-mock/setup-ci.js ts/test-mock/**/*_test.js",
     "test-eslint": "mocha .eslint/rules/**/*.test.js --ignore-leaks",
     "test-lint-intl": "ts-node ./build/intl-linter/linter.ts --test",
diff --git a/test/fix-linux-gtk.js b/test/fix-linux-gtk.js
new file mode 100644
index 0000000000..637e4fd70c
--- /dev/null
+++ b/test/fix-linux-gtk.js
@@ -0,0 +1,11 @@
+// Copyright 2025 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+const { app } = require('electron');
+
+if (process.platform === 'linux') {
+  // eslint-disable-next-line no-console
+  console.log('Applying electron switch for Linux GTK version --gtk-version=3');
+  // https://github.com/electron/electron/issues/46538#issuecomment-2808806722
+  app.commandLine.appendSwitch('gtk-version', '3');
+}