diff --git a/stdlib/__future__.pyi b/stdlib/__future__.pyi
index a68183dbe..4658afa9f 100644
--- a/stdlib/__future__.pyi
+++ b/stdlib/__future__.pyi
@@ -21,3 +21,31 @@ if sys.version_info >= (3, 7):
     annotations: _Feature
 
 all_feature_names: List[str]  # undocumented
+
+if sys.version_info >= (3, 7):
+    __all__ = [
+        "all_feature_names",
+        "absolute_import",
+        "division",
+        "generators",
+        "nested_scopes",
+        "print_function",
+        "unicode_literals",
+        "with_statement",
+        "barry_as_FLUFL",
+        "generator_stop",
+        "annotations",
+    ]
+else:
+    __all__ = [
+        "all_feature_names",
+        "absolute_import",
+        "division",
+        "generators",
+        "nested_scopes",
+        "print_function",
+        "unicode_literals",
+        "with_statement",
+        "barry_as_FLUFL",
+        "generator_stop",
+    ]