diff --git a/Lib/urllib/robotparser.py b/Lib/urllib/robotparser.py
index 24ee198c355f56..409f2b2e48de6e 100644
--- a/Lib/urllib/robotparser.py
+++ b/Lib/urllib/robotparser.py
@@ -11,6 +11,7 @@
 """
 
 import collections
+import urllib.error
 import urllib.parse
 import urllib.request