diff --git a/stdlib/3/webbrowser.pyi b/stdlib/3/webbrowser.pyi
index 2c7180802..0faa40c62 100644
--- a/stdlib/3/webbrowser.pyi
+++ b/stdlib/3/webbrowser.pyi
@@ -2,97 +2,97 @@
 #
 # NOTE: This dynamically typed stub was automatically generated by stubgen.
 
-from typing import Any
+from typing import Any, Optional, Callable, List
 
 class Error(Exception): ...
 
-def register(name, klass, instance=..., update_tryorder=...): ...
-def get(using=...): ...
-def open(url, new=..., autoraise=...): ...
-def open_new(url): ...
-def open_new_tab(url): ...
+def register(name: str, klass: Optional[Callable[[], BaseBrowser]], instance: BaseBrowser=..., update_tryorder: int=...) -> None: ...
+def get(using: str=...) -> BaseBrowser: ...
+def open(url: str, new: int=..., autoraise: bool=...) -> bool: ...
+def open_new(url: str) -> bool: ...
+def open_new_tab(url: str) -> bool: ...
 
 class BaseBrowser:
-    args = ... # type: Any
-    name = ... # type: Any
-    basename = ... # type: Any
-    def __init__(self, name=...) -> None: ...
-    def open(self, url, new=..., autoraise=...): ...
-    def open_new(self, url): ...
-    def open_new_tab(self, url): ...
+    args = ... # type: List[str]
+    name = ... # type: str
+    basename = ... # type: str
+    def __init__(self, name: str=...) -> None: ...
+    def open(self, url: str, new: int=..., autoraise: bool=...) -> bool: ...
+    def open_new(self, url: str) -> bool: ...
+    def open_new_tab(self, url: str) -> bool: ...
 
 class GenericBrowser(BaseBrowser):
-    name = ... # type: Any
-    args = ... # type: Any
-    basename = ... # type: Any
-    def __init__(self, name) -> None: ...
-    def open(self, url, new=..., autoraise=...): ...
+    name = ... # type: List[str]
+    args = ... # type: str
+    basename = ... # type: str
+    def __init__(self, name: str) -> None: ...
+    def open(self, url: str, new: int=..., autoraise: bool=...) -> bool: ...
 
 class BackgroundBrowser(GenericBrowser):
-    def open(self, url, new=..., autoraise=...): ...
+    def open(self, url: str, new: int=..., autoraise: bool=...) -> bool: ...
 
 class UnixBrowser(BaseBrowser):
-    raise_opts = ... # type: Any
-    background = ... # type: Any
-    redirect_stdout = ... # type: Any
-    remote_args = ... # type: Any
-    remote_action = ... # type: Any
-    remote_action_newwin = ... # type: Any
-    remote_action_newtab = ... # type: Any
-    def open(self, url, new=..., autoraise=...): ...
+    raise_opts = ... # type: List[str]
+    background = ... # type: bool
+    redirect_stdout = ... # type: bool
+    remote_args = ... # type: List[str]
+    remote_action = ... # type: str
+    remote_action_newwin = ... # type: str
+    remote_action_newtab = ... # type: str
+    def open(self, url: str, new: int=..., autoraise: bool=...) -> bool: ...
 
 class Mozilla(UnixBrowser):
-    raise_opts = ... # type: Any
-    remote_args = ... # type: Any
-    remote_action = ... # type: Any
-    remote_action_newwin = ... # type: Any
-    remote_action_newtab = ... # type: Any
-    background = ... # type: Any
+    raise_opts = ... # type: List[str]
+    remote_args = ... # type: List[str]
+    remote_action = ... # type: str
+    remote_action_newwin = ... # type: str
+    remote_action_newtab = ... # type: str
+    background = ... # type: bool
 
 class Galeon(UnixBrowser):
-    raise_opts = ... # type: Any
-    remote_args = ... # type: Any
-    remote_action = ... # type: Any
-    remote_action_newwin = ... # type: Any
-    background = ... # type: Any
+    raise_opts = ... # type: List[str]
+    remote_args = ... # type: List[str]
+    remote_action = ... # type: str
+    remote_action_newwin = ... # type: str
+    background = ... # type: bool
 
 class Chrome(UnixBrowser):
-    remote_args = ... # type: Any
-    remote_action = ... # type: Any
-    remote_action_newwin = ... # type: Any
-    remote_action_newtab = ... # type: Any
-    background = ... # type: Any
+    remote_args = ... # type: List[str]
+    remote_action = ... # type: str
+    remote_action_newwin = ... # type: str
+    remote_action_newtab = ... # type: str
+    background = ... # type: bool
 
 class Opera(UnixBrowser):
-    raise_opts = ... # type: Any
-    remote_args = ... # type: Any
-    remote_action = ... # type: Any
-    remote_action_newwin = ... # type: Any
-    remote_action_newtab = ... # type: Any
-    background = ... # type: Any
+    raise_opts = ... # type: List[str]
+    remote_args = ... # type: List[str]
+    remote_action = ... # type: str
+    remote_action_newwin = ... # type: str
+    remote_action_newtab = ... # type: str
+    background = ... # type: bool
 
 class Elinks(UnixBrowser):
-    remote_args = ... # type: Any
-    remote_action = ... # type: Any
-    remote_action_newwin = ... # type: Any
-    remote_action_newtab = ... # type: Any
-    background = ... # type: Any
-    redirect_stdout = ... # type: Any
+    remote_args = ... # type: List[str]
+    remote_action = ... # type: str
+    remote_action_newwin = ... # type: str
+    remote_action_newtab = ... # type: str
+    background = ... # type: bool
+    redirect_stdout = ... # type: bool
 
 class Konqueror(BaseBrowser):
-    def open(self, url, new=..., autoraise=...): ...
+    def open(self, url: str, new: int=..., autoraise: bool=...) -> bool: ...
 
 class Grail(BaseBrowser):
-    def open(self, url, new=..., autoraise=...): ...
+    def open(self, url: str, new: int=..., autoraise: bool=...) -> bool: ...
 
 class WindowsDefault(BaseBrowser):
-    def open(self, url, new=..., autoraise=...): ...
+    def open(self, url: str, new: int=..., autoraise: bool=...) -> bool: ...
 
 class MacOSX(BaseBrowser):
-    name = ... # type: Any
-    def __init__(self, name) -> None: ...
-    def open(self, url, new=..., autoraise=...): ...
+    name = ... # type: str
+    def __init__(self, name: str) -> None: ...
+    def open(self, url: str, new: int=..., autoraise: bool=...) -> bool: ...
 
 class MacOSXOSAScript(BaseBrowser):
-    def __init__(self, name) -> None: ...
-    def open(self, url, new=..., autoraise=...): ...
+    def __init__(self, name: str) -> None: ...
+    def open(self, url: str, new: int=..., autoraise: bool=...) -> bool: ...