diff --git a/third_party/3/dateutil/__init__.pyi b/third_party/3/dateutil/__init__.pyi
new file mode 100644
index 000000000..e69de29bb
diff --git a/third_party/3/dateutil/parser.pyi b/third_party/3/dateutil/parser.pyi
new file mode 100644
index 000000000..34c314eb0
--- /dev/null
+++ b/third_party/3/dateutil/parser.pyi
@@ -0,0 +1,52 @@
+from typing import List, Tuple, Optional, Callable, Union, IO, Any
+from datetime import datetime
+
+__all__ = ...  # type: List[str]
+
+
+class parserinfo(object):
+    JUMP = ...  # type: List[str]
+    WEEKDAYS = ...  # type: List[Tuple[str, str]]
+    MONTHS = ...  # type: List[Tuple[str, str]]
+    HMS = ...  # type: List[Tuple[str, str, str]]
+    AMPM = ...  # type: List[Tuple[str, str, str]]
+    UTCZONE = ...  # type: List[str]
+    PERTAIN = ...  # type: List[str]
+    TZOFFSET = ...  # type: Dict[str, int]
+
+    def __init__(self, dayfirst: bool=..., yearfirst: bool=...) -> None: ...
+    def jump(self, name: str) -> bool: ...
+    def weekday(self, name: str) -> str: ...
+    def month(self, name: str) -> str: ...
+    def hms(self, name: str) -> str: ...
+    def ampm(self, name: str) -> str: ...
+    def pertain(self, name: str) -> bool: ...
+    def utczone(self, name: str) -> bool: ...
+    def tzoffset(self, name: str) -> int: ...
+    def convertyear(self, year: int) -> int: ...
+    def validate(self, year: datetime) -> bool: ...
+
+
+class parser(object):
+    def __init__(self, info: parserinfo=...) -> None: ...
+
+    def parse(
+        self,
+        timestr: Union[str, bytes, IO[Any]],
+        default: Optional[datetime],
+        ignoretz: bool=...,
+        tzinfos =...,
+            ) -> datetime: ...
+
+DEFAULTPARSER = ...  # type: parser
+
+
+def parse(timestr, parserinfo: parserinfo=..., **kwargs) -> datetime:
+    ...
+
+
+class _tzparser(object):
+    ...
+
+
+DEFAULTTZPARSER = ...  # type: _tzparser