diff --git a/third_party/2and3/attr/__init__.pyi b/third_party/2and3/attr/__init__.pyi
index ea788ea3c..fcb93b18e 100644
--- a/third_party/2and3/attr/__init__.pyi
+++ b/third_party/2and3/attr/__init__.pyi
@@ -167,6 +167,7 @@ def attrs(
     auto_attribs: bool = ...,
     kw_only: bool = ...,
     cache_hash: bool = ...,
+    auto_exc: bool = ...,
 ) -> _C: ...
 @overload
 def attrs(
@@ -184,6 +185,7 @@ def attrs(
     auto_attribs: bool = ...,
     kw_only: bool = ...,
     cache_hash: bool = ...,
+    auto_exc: bool = ...,
 ) -> Callable[[_C], _C]: ...
 
 # TODO: add support for returning NamedTuple from the mypy plugin
@@ -212,6 +214,7 @@ def make_class(
     auto_attribs: bool = ...,
     kw_only: bool = ...,
     cache_hash: bool = ...,
+    auto_exc: bool = ...,
 ) -> type: ...
 
 # _funcs --