diff --git a/src/um/schannel.rs b/src/um/schannel.rs
index 5ec1ac008..645d51630 100644
--- a/src/um/schannel.rs
+++ b/src/um/schannel.rs
@@ -311,6 +311,9 @@ pub const SP_PROT_TLS1_1: DWORD = SP_PROT_TLS1_1_SERVER | SP_PROT_TLS1_1_CLIENT;
 pub const SP_PROT_TLS1_2_SERVER: DWORD = 0x00000400;
 pub const SP_PROT_TLS1_2_CLIENT: DWORD = 0x00000800;
 pub const SP_PROT_TLS1_2: DWORD = SP_PROT_TLS1_2_SERVER | SP_PROT_TLS1_2_CLIENT;
+pub const SP_PROT_TLS1_3_SERVER: DWORD = 0x00001000;
+pub const SP_PROT_TLS1_3_CLIENT: DWORD = 0x00002000;
+pub const SP_PROT_TLS1_3: DWORD = SP_PROT_TLS1_3_SERVER | SP_PROT_TLS1_3_CLIENT;
 pub const SP_PROT_DTLS_SERVER: DWORD = 0x00010000;
 pub const SP_PROT_DTLS_CLIENT: DWORD = 0x00020000;
 pub const SP_PROT_DTLS: DWORD = SP_PROT_DTLS_SERVER | SP_PROT_DTLS_CLIENT;
@@ -320,13 +323,13 @@ pub const SP_PROT_DTLS1_0: DWORD = SP_PROT_DTLS1_0_SERVER | SP_PROT_DTLS1_0_CLIE
 pub const SP_PROT_DTLS1_X_SERVER: DWORD = SP_PROT_DTLS1_0_SERVER;
 pub const SP_PROT_DTLS1_X_CLIENT: DWORD = SP_PROT_DTLS1_0_CLIENT;
 pub const SP_PROT_DTLS1_X: DWORD = SP_PROT_DTLS1_X_SERVER | SP_PROT_DTLS1_X_CLIENT;
-pub const SP_PROT_TLS1_1PLUS_SERVER: DWORD = SP_PROT_TLS1_1_SERVER | SP_PROT_TLS1_2_SERVER;
-pub const SP_PROT_TLS1_1PLUS_CLIENT: DWORD = SP_PROT_TLS1_1_CLIENT | SP_PROT_TLS1_2_CLIENT;
+pub const SP_PROT_TLS1_1PLUS_SERVER: DWORD = SP_PROT_TLS1_1_SERVER | SP_PROT_TLS1_2_SERVER | SP_PROT_TLS1_3_SERVER;
+pub const SP_PROT_TLS1_1PLUS_CLIENT: DWORD = SP_PROT_TLS1_1_CLIENT | SP_PROT_TLS1_2_CLIENT | SP_PROT_TLS1_3_CLIENT;
 pub const SP_PROT_TLS1_1PLUS: DWORD = SP_PROT_TLS1_1PLUS_SERVER | SP_PROT_TLS1_1PLUS_CLIENT;
 pub const SP_PROT_TLS1_X_SERVER: DWORD = SP_PROT_TLS1_0_SERVER | SP_PROT_TLS1_1_SERVER
-    | SP_PROT_TLS1_2_SERVER;
+    | SP_PROT_TLS1_2_SERVER | SP_PROT_TLS1_3_SERVER;
 pub const SP_PROT_TLS1_X_CLIENT: DWORD = SP_PROT_TLS1_0_CLIENT | SP_PROT_TLS1_1_CLIENT
-    | SP_PROT_TLS1_2_CLIENT;
+    | SP_PROT_TLS1_2_CLIENT | SP_PROT_TLS1_3_CLIENT;
 pub const SP_PROT_TLS1_X: DWORD = SP_PROT_TLS1_X_SERVER | SP_PROT_TLS1_X_CLIENT;
 pub const SP_PROT_SSL3TLS1_X_CLIENTS: DWORD = SP_PROT_TLS1_X_CLIENT | SP_PROT_SSL3_CLIENT;
 pub const SP_PROT_SSL3TLS1_X_SERVERS: DWORD = SP_PROT_TLS1_X_SERVER | SP_PROT_SSL3_SERVER;