diff --git a/core/proxy.proto b/core/proxy.proto
index eca283b..4c2194b 100644
--- a/core/proxy.proto
+++ b/core/proxy.proto
@@ -272,6 +272,14 @@ message CodeMfaSetupFinishResponse {
   repeated string recovery_codes = 1;
 }
 
+message AwaitRemoteMfaFinishRequest {
+  string token = 1;
+}
+
+message AwaitRemoteMfaFinishResponse {
+  string preshared_key = 1;
+}
+
 message InitialInfo {
   bytes private_cookies_key = 1;
 }
@@ -307,6 +315,7 @@ message CoreResponse {
     CodeMfaSetupStartResponse code_mfa_setup_start_response = 16;
     CodeMfaSetupFinishResponse code_mfa_setup_finish_response = 17;
     InitialInfo initial_info = 18;
+    AwaitRemoteMfaFinishResponse await_remote_mfa_finish = 19;
   }
 }
 
@@ -334,6 +343,7 @@ message CoreRequest {
     ClientMfaTokenValidationRequest client_mfa_token_validation = 17;
     CodeMfaSetupStartRequest code_mfa_setup_start = 18;
     CodeMfaSetupFinishRequest code_mfa_setup_finish = 19;
+    AwaitRemoteMfaFinishRequest await_remote_mfa_finish = 20;
   }
 }