diff --git a/internal/runtime/executor/antigravity_executor.go b/internal/runtime/executor/antigravity_executor.go
index 6983bface..5cc93448d 100644
--- a/internal/runtime/executor/antigravity_executor.go
+++ b/internal/runtime/executor/antigravity_executor.go
@@ -1772,7 +1772,7 @@ func (e *AntigravityExecutor) updateAntigravityCreditsBalance(ctx context.Contex
 	}
 	httpReq.Header.Set("Authorization", "Bearer "+token)
 	httpReq.Header.Set("Content-Type", "application/json")
-	httpReq.Header.Set("User-Agent", "google-api-nodejs-client/9.15.1")
+	httpReq.Header.Set("User-Agent", resolveUserAgent(auth))
 
 	httpClient := newAntigravityHTTPClient(ctx, e.cfg, auth, 0)
 	httpResp, errDo := httpClient.Do(httpReq)