diff --git a/stdlib/2/__builtin__.pyi b/stdlib/2/__builtin__.pyi
index e4897c7a1..b509195b7 100644
--- a/stdlib/2/__builtin__.pyi
+++ b/stdlib/2/__builtin__.pyi
@@ -1450,7 +1450,9 @@ class KeyboardInterrupt(BaseException): ...
 class SystemExit(BaseException):
     code: int
 class Exception(BaseException): ...
-class StopIteration(Exception): ...
+class StopIteration(Exception):
+    if sys.version_info >= (3,):
+        value: Any
 if sys.version_info >= (3,):
     _StandardError = Exception
     class OSError(Exception):
diff --git a/stdlib/2and3/builtins.pyi b/stdlib/2and3/builtins.pyi
index e4897c7a1..b509195b7 100644
--- a/stdlib/2and3/builtins.pyi
+++ b/stdlib/2and3/builtins.pyi
@@ -1450,7 +1450,9 @@ class KeyboardInterrupt(BaseException): ...
 class SystemExit(BaseException):
     code: int
 class Exception(BaseException): ...
-class StopIteration(Exception): ...
+class StopIteration(Exception):
+    if sys.version_info >= (3,):
+        value: Any
 if sys.version_info >= (3,):
     _StandardError = Exception
     class OSError(Exception):