diff --git a/core/sys/windows/types.odin b/core/sys/windows/types.odin
index c366a0102..85c94284c 100644
--- a/core/sys/windows/types.odin
+++ b/core/sys/windows/types.odin
@@ -1662,6 +1662,7 @@ WSAENOTCONN: c_int : 10057
 WSAESHUTDOWN: c_int : 10058
 WSAETIMEDOUT: c_int : 10060
 WSAECONNREFUSED: c_int : 10061
+WSATRY_AGAIN: c_int : 11002
 
 MAX_PROTOCOL_CHAIN: DWORD : 7