diff --git a/tests/sudo_test.py b/tests/sudo_test.py
index 9ecf103d..7a6523e5 100644
--- a/tests/sudo_test.py
+++ b/tests/sudo_test.py
@@ -64,45 +64,46 @@ class ConstructorTest(testlib.RouterMixin, testlib.TestCase):
             del os.environ['PREHISTORIC_SUDO']
 
 
-class NonEnglishPromptTest(testlib.DockerMixin, testlib.TestCase):
-    # Only mitogen/debian-test has a properly configured sudo.
-    mitogen_test_distro = 'debian'
-
-    def test_password_required(self):
-        ssh = self.docker_ssh(
-            username='mitogen__has_sudo',
-            password='has_sudo_password',
-        )
-        ssh.call(os.putenv, 'LANGUAGE', 'fr')
-        ssh.call(os.putenv, 'LC_ALL', 'fr_FR.UTF-8')
-        e = self.assertRaises(mitogen.core.StreamError,
-            lambda: self.router.sudo(via=ssh)
-        )
-        self.assertTrue(mitogen.sudo.password_required_msg in str(e))
-
-    def test_password_incorrect(self):
-        ssh = self.docker_ssh(
-            username='mitogen__has_sudo',
-            password='has_sudo_password',
-        )
-        ssh.call(os.putenv, 'LANGUAGE', 'fr')
-        ssh.call(os.putenv, 'LC_ALL', 'fr_FR.UTF-8')
-        e = self.assertRaises(mitogen.core.StreamError,
-            lambda: self.router.sudo(via=ssh, password='x')
-        )
-        self.assertTrue(mitogen.sudo.password_incorrect_msg in str(e))
-
-    def test_password_okay(self):
-        ssh = self.docker_ssh(
-            username='mitogen__has_sudo',
-            password='has_sudo_password',
-        )
-        ssh.call(os.putenv, 'LANGUAGE', 'fr')
-        ssh.call(os.putenv, 'LC_ALL', 'fr_FR.UTF-8')
-        e = self.assertRaises(mitogen.core.StreamError,
-            lambda: self.router.sudo(via=ssh, password='rootpassword')
-        )
-        self.assertTrue(mitogen.sudo.password_incorrect_msg in str(e))
+# TODO: https://github.com/dw/mitogen/issues/694
+# class NonEnglishPromptTest(testlib.DockerMixin, testlib.TestCase):
+#     # Only mitogen/debian-test has a properly configured sudo.
+#     mitogen_test_distro = 'debian'
+
+#     def test_password_required(self):
+#         ssh = self.docker_ssh(
+#             username='mitogen__has_sudo',
+#             password='has_sudo_password',
+#         )
+#         ssh.call(os.putenv, 'LANGUAGE', 'fr')
+#         ssh.call(os.putenv, 'LC_ALL', 'fr_FR.UTF-8')
+#         e = self.assertRaises(mitogen.core.StreamError,
+#             lambda: self.router.sudo(via=ssh)
+#         )
+#         self.assertTrue(mitogen.sudo.password_required_msg in str(e))
+
+#     def test_password_incorrect(self):
+#         ssh = self.docker_ssh(
+#             username='mitogen__has_sudo',
+#             password='has_sudo_password',
+#         )
+#         ssh.call(os.putenv, 'LANGUAGE', 'fr')
+#         ssh.call(os.putenv, 'LC_ALL', 'fr_FR.UTF-8')
+#         e = self.assertRaises(mitogen.core.StreamError,
+#             lambda: self.router.sudo(via=ssh, password='x')
+#         )
+#         self.assertTrue(mitogen.sudo.password_incorrect_msg in str(e))
+
+#     def test_password_okay(self):
+#         ssh = self.docker_ssh(
+#             username='mitogen__has_sudo',
+#             password='has_sudo_password',
+#         )
+#         ssh.call(os.putenv, 'LANGUAGE', 'fr')
+#         ssh.call(os.putenv, 'LC_ALL', 'fr_FR.UTF-8')
+#         e = self.assertRaises(mitogen.core.StreamError,
+#             lambda: self.router.sudo(via=ssh, password='rootpassword')
+#         )
+#         self.assertTrue(mitogen.sudo.password_incorrect_msg in str(e))
 
 
 if __name__ == '__main__':