diff --git a/packages/toolbox-llamaindex/integration.cloudbuild.yaml b/packages/toolbox-llamaindex/integration.cloudbuild.yaml
index ce32e8a6..8ca0a808 100644
--- a/packages/toolbox-llamaindex/integration.cloudbuild.yaml
+++ b/packages/toolbox-llamaindex/integration.cloudbuild.yaml
@@ -43,4 +43,4 @@ options:
   logging: CLOUD_LOGGING_ONLY
 substitutions:
   _VERSION: '3.13'
-  _TOOLBOX_VERSION: '0.3.0'
+  _TOOLBOX_VERSION: '0.4.0'