diff --git a/src/buildx/history.ts b/src/buildx/history.ts
index 3bae017..9465e9c 100644
--- a/src/buildx/history.ts
+++ b/src/buildx/history.ts
@@ -130,6 +130,7 @@ export class History {
             numCachedSteps: res.NumCachedSteps,
             numTotalSteps: res.NumTotalSteps,
             numCompletedSteps: res.NumCompletedSteps,
+            defaultPlatform: res.Platform?.[0],
             error: errorLogs
           };
         });
diff --git a/src/types/buildx/history.ts b/src/types/buildx/history.ts
index c81faf4..e9a8ed7 100644
--- a/src/types/buildx/history.ts
+++ b/src/types/buildx/history.ts
@@ -131,5 +131,6 @@ export interface Summary {
   numTotalSteps: number;
   numCompletedSteps: number;
   frontendAttrs?: Record<string, string>;
+  defaultPlatform?: string;
   error?: string;
 }