diff --git a/migrations/000143_add_units_paths_fk.down.sql b/migrations/000143_add_units_paths_fk.down.sql
new file mode 100644
index 0000000..bba721a
--- /dev/null
+++ b/migrations/000143_add_units_paths_fk.down.sql
@@ -0,0 +1,9 @@
+-- Copyright 2021 The Go Authors. All rights reserved.
+-- Use of this source code is governed by a BSD-style
+-- license that can be found in the LICENSE file.
+
+BEGIN;
+
+ALTER TABLE units DROP CONSTRAINT units_path_id_fkey;
+
+END;
diff --git a/migrations/000143_add_units_paths_fk.up.sql b/migrations/000143_add_units_paths_fk.up.sql
new file mode 100644
index 0000000..fb7bb20
--- /dev/null
+++ b/migrations/000143_add_units_paths_fk.up.sql
@@ -0,0 +1,12 @@
+-- Copyright 2021 The Go Authors. All rights reserved.
+-- Use of this source code is governed by a BSD-style
+-- license that can be found in the LICENSE file.
+
+BEGIN;
+
+ALTER TABLE units
+    ADD CONSTRAINT units_path_id_fkey
+    FOREIGN KEY (path_id) REFERENCES paths(id)
+    NOT VALID;
+
+END;