diff --git a/puppy.nimble b/puppy.nimble
index f9e7254..0052b6d 100644
--- a/puppy.nimble
+++ b/puppy.nimble
@@ -9,3 +9,4 @@ requires "nim >= 1.2.2"
 requires "libcurl >= 1.0.0"
 requires "zippy >= 0.10.0"
 requires "webby >= 0.2.0"
+requires "winversion"
diff --git a/src/puppy/platforms/win32/platform.nim b/src/puppy/platforms/win32/platform.nim
index 1c90dcf..cbb63d6 100644
--- a/src/puppy/platforms/win32/platform.nim
+++ b/src/puppy/platforms/win32/platform.nim
@@ -1,4 +1,5 @@
 import puppy/common, std/strutils, utils, windefs, zippy
+from winversion import getWindowsVersionEx
 
 proc internalFetch*(req: Request): Response {.raises: [PuppyError].} =
   result = Response()
@@ -6,10 +7,13 @@ proc internalFetch*(req: Request): Response {.raises: [PuppyError].} =
   var hSession, hConnect, hRequest: HINTERNET
   try:
     let wideUserAgent = req.headers["user-agent"].wstr()
-
+    {.cast(raises:[]).}:
+      let infoEx = getWindowsVersionEx()
+    let lessThan63 = infoEx.dwMajorVersion < 6 or infoEx.dwMajorVersion == 6 and infoEx.dwMinorVersion <= 3
+    let dwAccessType = if lessThan63: WINHTTP_ACCESS_TYPE_DEFAULT_PROXY else: WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY
     hSession = WinHttpOpen(
       cast[ptr WCHAR](wideUserAgent[0].unsafeAddr),
-      WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY,
+      dwAccessType.DWORD,
       nil,
       nil,
       0
diff --git a/src/puppy/platforms/win32/windefs.nim b/src/puppy/platforms/win32/windefs.nim
index c265920..9011994 100644
--- a/src/puppy/platforms/win32/windefs.nim
+++ b/src/puppy/platforms/win32/windefs.nim
@@ -23,6 +23,9 @@ type
   LPVOID* = pointer
 const
   CP_UTF8* = 65001
+  WINHTTP_ACCESS_TYPE_NO_PROXY* = 1
+  WINHTTP_ACCESS_TYPE_DEFAULT_PROXY* = 2
+  WINHTTP_ACCESS_TYPE_NAMED_PROXY* = 3
   WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY* = 4
   WINHTTP_FLAG_SECURE* = 0x00800000
   WINHTTP_ADDREQ_FLAG_ADD* = 0x20000000