diff --git a/validate_email/updater.py b/validate_email/updater.py
index 610f60b..fe60932 100644
--- a/validate_email/updater.py
+++ b/validate_email/updater.py
@@ -1,6 +1,5 @@
 from http.client import HTTPResponse
 from logging import getLogger
-from os import geteuid
 from pathlib import Path
 from tempfile import gettempdir, gettempprefix
 from threading import Thread
@@ -9,6 +8,14 @@ from typing import Callable, Optional
 from urllib.error import HTTPError
 from urllib.request import Request, urlopen
 
+try:
+    from os import geteuid
+except ImportError:
+    def geteuid():
+        'Windows does not have `os.geteuid()`.'
+        return '1'
+
+
 LOGGER = getLogger(__name__)
 TMP_PATH = Path(gettempdir()).joinpath(
     f'{gettempprefix()}-py3-validate-email-{geteuid()}')