diff --git a/src/bankd.h b/src/bankd.h
index 5411968..0ca1984 100644
--- a/src/bankd.h
+++ b/src/bankd.h
@@ -61,6 +61,8 @@
 
 	/* thread of this worker. */
 	pthread_t thread;
+	/* top talloc context for this worker/thread */
+	void *tall_ctx;
 
 	/* File descriptor of the TCP connection to the remsim-client (modem) */
 	struct {
@@ -101,6 +103,9 @@
 	/* list of slot mappings. only ever modified in main thread! */
 	struct slotmaps *slotmaps;
 
+	/* pthread ID of main thread */
+	pthread_t main;
+
 	/* list of bankd_workers. accessed/modified by multiple threads; protected by mutex */
 	struct llist_head workers;
 	pthread_mutex_t workers_mutex;