diff --git a/api/csolution-openapi.yml b/api/csolution-openapi.yml
index dac3aff..de9b262 100644
--- a/api/csolution-openapi.yml
+++ b/api/csolution-openapi.yml
@@ -1,7 +1,7 @@
 openapi: 3.1.0
 info:
   title: csolution rpc
-  version: 0.0.3
+  version: 0.0.4
   description: Specification of remote procedure call methods for CMSIS csolution integration
   license:
     name: Apache 2.0
@@ -868,8 +868,13 @@ components:
               properties:
                 solution:
                   type: string
+                  description: Path to <solution>.csolution.yml
+                activeTarget:
+                  type: string
+                  description: Active target set in the format <target-type>[@<set>]
               required:
                 - solution
+                - activeTarget
     LoadSolutionResponse:
       allOf:
         - $ref: '#/x-jsonrpc-envelope-response'