diff --git a/proto/spaceone/api/identity/v2/api_key.proto b/proto/spaceone/api/identity/v2/api_key.proto
index f1a34e82e..84baa2837 100644
--- a/proto/spaceone/api/identity/v2/api_key.proto
+++ b/proto/spaceone/api/identity/v2/api_key.proto
@@ -99,8 +99,9 @@ message APIKeyInfo {
 
     string api_key_id = 1;
     string api_key = 2;
-    string name = 3;
-    State state = 4;
+    string app_id = 3;
+    string name = 4;
+    State state = 5;
     string domain_id = 21;
     string user_id = 22;
     string created_at = 31;
diff --git a/proto/spaceone/api/identity/v2/app.proto b/proto/spaceone/api/identity/v2/app.proto
index 81b1a518c..df5862845 100644
--- a/proto/spaceone/api/identity/v2/app.proto
+++ b/proto/spaceone/api/identity/v2/app.proto
@@ -25,7 +25,7 @@ service App {
         };
     }
 
-    rpc generate_api_key (AppRequest) returns (AppInfo) {
+    rpc generate_api_key (GenerateAPIKeyAppRequest) returns (AppInfo) {
         option (google.api.http) = {
             post: "/identity/v2/app/generate-api-key"
             body: "*"
@@ -105,6 +105,14 @@ message UpdateAppRequest {
     string workspace_id = 22;
 }
 
+message GenerateAPIKeyAppRequest {
+    string app_id = 1;
+    string expired_at = 2;
+    string domain_id = 21;
+    // +optional
+    string workspace_id = 22;
+}
+
 message AppRequest {
     string app_id = 1;
     string domain_id = 21;