diff --git a/schema/pgsql-migrations/upgrade_142.sql b/schema/pgsql-migrations/upgrade_142.sql
new file mode 100644
index 00000000..5b0c1f31
--- /dev/null
+++ b/schema/pgsql-migrations/upgrade_142.sql
@@ -0,0 +1,13 @@
+ALTER TABLE import_run
+  DROP CONSTRAINT import_run_source;
+
+ALTER TABLE import_run
+  ADD CONSTRAINT import_run_source
+    FOREIGN KEY (source_id)
+    REFERENCES import_source (id)
+    ON DELETE CASCADE
+    ON UPDATE RESTRICT;
+
+INSERT INTO director_schema_migration
+  (schema_version, migration_time)
+  VALUES (142, NOW());
diff --git a/schema/pgsql.sql b/schema/pgsql.sql
index d8797a3a..9e38e001 100644
--- a/schema/pgsql.sql
+++ b/schema/pgsql.sql
@@ -1450,8 +1450,8 @@ CREATE TABLE import_run (
   CONSTRAINT import_run_source
   FOREIGN KEY (source_id)
   REFERENCES import_source (id)
-  ON DELETE RESTRICT
-  ON UPDATE CASCADE,
+  ON DELETE CASCADE
+  ON UPDATE RESTRICT,
   CONSTRAINT import_run_rowset
   FOREIGN KEY (rowset_checksum)
   REFERENCES imported_rowset (checksum)
@@ -1841,4 +1841,4 @@ CREATE INDEX user_resolved_var_schecksum ON icinga_user_resolved_var (checksum);
 
 INSERT INTO director_schema_migration
   (schema_version, migration_time)
-  VALUES (141, NOW());
+  VALUES (142, NOW());