diff --git a/include/ntapi/nt_tty.h b/include/ntapi/nt_tty.h
index f5081a0..04fb804 100644
--- a/include/ntapi/nt_tty.h
+++ b/include/ntapi/nt_tty.h
@@ -160,6 +160,8 @@ typedef enum _nt_tty_server_info_class {
 
 typedef enum _nt_pty_info_class {
 	NT_PTY_BASIC_INFORMATION,
+	NT_PTY_SLOT_INFORMATION,
+	NT_PTY_CONTEXT_INFORMATION,
 	NT_PTY_CLIENT_INFORMATION,
 	NT_PTY_INHERIT_INFORMATION,
 	NT_PTY_INFORMATION_CAP