diff --git a/src/puppy/platforms/win32/platform.nim b/src/puppy/platforms/win32/platform.nim
index 19e1282..1acffb2 100644
--- a/src/puppy/platforms/win32/platform.nim
+++ b/src/puppy/platforms/win32/platform.nim
@@ -116,7 +116,7 @@ proc fetch*(req: Request): Response {.raises: [PuppyError].} =
     ) == 0:
 
       let error = GetLastError()
-      if error in {ERROR_WINHTTP_SECURE_FAILURE, ERROR_INTERNET_INVALID_CA} and
+      if error in {ERROR_WINHTTP_SECURE_FAILURE, ERROR_INTERNET_INVALID_CA, ERROR_INTERNET_SEC_CERT_DATE_INVALID, ERROR_INTERNET_SEC_INVALID_CERT, ERROR_INTERNET_SEC_CERT_CN_INVALID, ERROR_INTERNET_SEC_CERT_NO_REV, ERROR_INTERNET_SEC_CERT_REV_FAILED, ERROR_INTERNET_SEC_CERT_REVOKED, ERROR_INTERNET_SEC_CERT_ERRORS} and
         req.allowAnyHttpsCertificate:
         # If this is a certificate error but we should allow any HTTPS cert,
         # we need to set some options and retry sending the request.
diff --git a/src/puppy/platforms/win32/windefs.nim b/src/puppy/platforms/win32/windefs.nim
index 253f241..802fa34 100644
--- a/src/puppy/platforms/win32/windefs.nim
+++ b/src/puppy/platforms/win32/windefs.nim
@@ -33,6 +33,14 @@ const
   ERROR_INSUFFICIENT_BUFFER* = 122
   ERROR_WINHTTP_SECURE_FAILURE* = 12175
   ERROR_INTERNET_INVALID_CA* = 12045
+  ERROR_INTERNET_SEC_CERT_DATE_INVALID* = 12037
+  ERROR_INTERNET_SEC_INVALID_CERT* = 12169
+  ERROR_INTERNET_SEC_CERT_ERRORS* = 12055
+  ERROR_INTERNET_SEC_CERT_NO_REV* = 12056
+  ERROR_INTERNET_SEC_CERT_CN_INVALID* = 12038
+  ERROR_INTERNET_SEC_CERT_REV_FAILED* = 12057
+  ERROR_INTERNET_SEC_CERT_REVOKED* = 12170
+
   WINHTTP_OPTION_SECURITY_FLAGS* = 31
   SECURITY_FLAG_IGNORE_UNKNOWN_CA* = 0x00000100
   # SECURITY_FLAG_IGNORE_WRONG_USAGE* = 0x00000200