diff --git a/protos/rdc.proto b/protos/rdc.proto
index 77998dfdac..eac7165689 100755
--- a/protos/rdc.proto
+++ b/protos/rdc.proto
@@ -151,6 +151,9 @@ service RdcAPI {
   //    size_t config_size,
   //    rdc_diag_test_result_t* result);
   rpc DiagnosticTestCaseRun(DiagnosticTestCaseRunRequest) returns (DiagnosticTestCaseRunResponse) {}
+
+  //Just an RPC method not used as an API
+  rpc GetMixedComponentVersion(GetMixedComponentVersionRequest) returns (GetMixedComponentVersionResponse) {}
 }
 
 message Empty {
@@ -474,3 +477,12 @@ message DiagnosticTestCaseRunResponse {
   uint32 status = 1;
   DiagnosticTestResult result = 2;
 }
+
+message GetMixedComponentVersionRequest {
+  uint32 component_id = 1;
+}
+
+message GetMixedComponentVersionResponse {
+  uint32 status = 1;
+  string version = 2;
+}
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