diff --git a/stdlib/2/urllib2.pyi b/stdlib/2/urllib2.pyi
index e15289738033..f71a08b9c9fe 100644
--- a/stdlib/2/urllib2.pyi
+++ b/stdlib/2/urllib2.pyi
@@ -12,6 +12,7 @@ class URLError(IOError):
 class HTTPError(URLError, addinfourl):
     code = ...  # type: int
     headers = ...  # type: Dict[str, str]
+    def __init__(self, url, code, msg, hdrs, fp) -> None: ...
 
 class Request(object):
     host = ...  # type: str
diff --git a/stdlib/3/urllib/error.pyi b/stdlib/3/urllib/error.pyi
index a29347c19d27..6e3d6a58ff2b 100644
--- a/stdlib/3/urllib/error.pyi
+++ b/stdlib/3/urllib/error.pyi
@@ -8,4 +8,5 @@ class URLError(IOError):
 class HTTPError(URLError, addinfourl):
     code = ...  # type: int
     headers = ...  # type: Dict[str, str]
+    def __init__(self, url, code, msg, hdrs, fp) -> None: ...
 class ContentTooShortError(URLError): ...