diff --git a/stubs/pywin32/win32/win32api.pyi b/stubs/pywin32/win32/win32api.pyi
index 855559c79..1961d54e0 100644
--- a/stubs/pywin32/win32/win32api.pyi
+++ b/stubs/pywin32/win32/win32api.pyi
@@ -11,6 +11,20 @@ class _MonitorInfo(TypedDict):
     Flags: int
     Device: str
 
+class _FileVersionInfo(TypedDict):
+    Signature: int
+    StrucVersion: int
+    FileVersionMS: int
+    FileVersionLS: int
+    ProductVersionMS: int
+    ProductVersionLS: int
+    FileFlagsMask: int
+    FileFlags: int
+    FileOS: int
+    FileType: int
+    FileSubtype: int
+    FileDate: None | Incomplete
+
 def AbortSystemShutdown(computerName: str) -> None: ...
 def InitiateSystemShutdown(computerName: str, message: str, timeOut, bForceClose, bRebootAfterShutdown) -> None: ...
 def Apply(exceptionHandler, func, args): ...
@@ -91,7 +105,7 @@ def GetDomainName() -> str: ...
 def GetEnvironmentVariable(variable): ...
 def GetEnvironmentVariableW(Name) -> str: ...
 def GetFileAttributes(pathName: str): ...
-def GetFileVersionInfo(Filename: str, SubBlock: str) -> None: ...
+def GetFileVersionInfo(__Filename: str, __SubBlock: str) -> _FileVersionInfo: ...
 def GetFocus(): ...
 def GetFullPathName(fileName: str) -> str: ...
 def GetHandleInformation(__Object: int): ...
@@ -249,10 +263,10 @@ def WinExec(cmdLine: str, arg) -> None: ...
 def WinHelp(hwnd: int, hlpFile: str, cmd, data: str | int = ...) -> None: ...
 def WriteProfileSection(section: str, data: str, iniName: str | None = ...): ...
 def WriteProfileVal(section: str, entry: str, value: str, iniName: str | None = ...) -> None: ...
-def HIBYTE(val): ...
-def LOBYTE(val): ...
-def HIWORD(val): ...
-def LOWORD(val): ...
+def HIBYTE(__val: int) -> int: ...
+def LOBYTE(__val: int) -> int: ...
+def HIWORD(__val: int) -> int: ...
+def LOWORD(__val: int) -> int: ...
 def RGB(red, green, blue): ...
 def MAKELANGID(PrimaryLanguage, SubLanguage): ...
 def MAKEWORD(low, high): ...