diff --git a/sql/reverse.sql b/sql/reverse.sql
index 8b1378917..351d24900 100644
--- a/sql/reverse.sql
+++ b/sql/reverse.sql
@@ -1 +1,3 @@
 
+create trigger t_jrnx_upd before update on
+    public.jrnx for each row execute function jrnx_ins();
\ No newline at end of file
diff --git a/sql/upgrade.sql b/sql/upgrade.sql
index e69de29bb..0e7d7a6d5 100644
--- a/sql/upgrade.sql
+++ b/sql/upgrade.sql
@@ -0,0 +1 @@
+DROP TRIGGER t_jrnx_upd ON public.jrnx;