diff --git a/dba/patches/1.1.11a.sql b/dba/patches/1.1.11a.sql
new file mode 100644
index 00000000..55c6f52e
--- /dev/null
+++ b/dba/patches/1.1.11a.sql
@@ -0,0 +1,17 @@
+
+-- Sort out accessing calendar entries.
+-- This patch file is the same in/out revision as 1.1.11 but it works with newer databases (8.x)
+
+BEGIN;
+SELECT check_db_revision(1,1,10);
+
+ALTER TABLE caldav_data DROP CONSTRAINT "caldav_data_user_no_fkey";
+ALTER TABLE caldav_data ADD CONSTRAINT "caldav_data_user_no_fkey" FOREIGN KEY (user_no) REFERENCES usr(user_no) ON UPDATE CASCADE ON DELETE CASCADE DEFERRABLE;
+
+ALTER TABLE collection DROP CONSTRAINT "collection_user_no_fkey";
+ALTER TABLE collection ADD CONSTRAINT "collection_user_no_fkey" FOREIGN KEY (user_no) REFERENCES usr(user_no) ON UPDATE CASCADE ON DELETE CASCADE DEFERRABLE;
+
+SELECT new_db_revision(1,1,11, 'November' );
+COMMIT;
+ROLLBACK;
+