diff --git a/swaymsg/main.c b/swaymsg/main.c
index 5c57171e7..0ef6eb8a5 100644
--- a/swaymsg/main.c
+++ b/swaymsg/main.c
@@ -330,6 +330,9 @@ static void pretty_print_tree(json_object *obj, int indent) {
 		const char *instance = json_object_get_string(json_object_object_get(window_props_obj, "instance"));
 		const char *class = json_object_get_string(json_object_object_get(window_props_obj, "class"));
 		int x11_id = json_object_get_int(json_object_object_get(obj, "window"));
+		const char *sandbox_engine = json_object_get_string(json_object_object_get(obj, "sandbox_engine"));
+		const char *sandbox_app_id = json_object_get_string(json_object_object_get(obj, "sandbox_app_id"));
+		const char *sandbox_instance_id = json_object_get_string(json_object_object_get(obj, "sandbox_instance_id"));
 
 		printf(" (%s, pid: %d", shell, pid);
 		if (app_id != NULL) {
@@ -344,6 +347,15 @@ static void pretty_print_tree(json_object *obj, int indent) {
 		if (x11_id != 0) {
 			printf(", X11 window: 0x%X", x11_id);
 		}
+		if (sandbox_engine != NULL) {
+			printf(", sandbox_engine: \"%s\"", sandbox_engine);
+		}
+		if (sandbox_app_id != NULL) {
+			printf(", sandbox_app_id: \"%s\"", sandbox_app_id);
+		}
+		if (sandbox_instance_id != NULL) {
+			printf(", sandbox_instance_id: \"%s\"", sandbox_instance_id);
+		}
 		printf(")");
 	}