diff --git a/migrations/000.293.sql b/migrations/000.293.sql
new file mode 100644
index 0000000..de7c5a7
--- /dev/null
+++ b/migrations/000.293.sql
@@ -0,0 +1,28 @@
+-- P5-6616: add locale_id column to collections_texts and populate it
+
+ALTER TABLE collections_texts ADD column locale_id INTEGER;
+
+ALTER TABLE collections_texts
+    add CONSTRAINT locale_fkey
+    FOREIGN KEY (locale_id)
+    REFERENCES locales(id) match SIMPLE;
+
+UPDATE collections_texts SET locale_id = 1 where market_id = 1;
+UPDATE collections_texts SET locale_id = 2 where market_id = 2;
+UPDATE collections_texts SET locale_id = 3 where market_id = 3;
+UPDATE collections_texts SET locale_id = 4 where market_id = 4;
+UPDATE collections_texts SET locale_id = 5 where market_id = 5;
+UPDATE collections_texts SET locale_id = 7 where market_id = 7;
+UPDATE collections_texts SET locale_id = 8 where market_id = 8;
+UPDATE collections_texts SET locale_id = 9 where market_id = 9;
+UPDATE collections_texts SET locale_id = 10 where market_id = 10;
+UPDATE collections_texts SET locale_id = 11 where market_id = 11;
+UPDATE collections_texts SET locale_id = 12 where market_id = 12;
+UPDATE collections_texts SET locale_id = 13 where market_id = 13;
+UPDATE collections_texts SET locale_id = 14 where market_id = 14;
+UPDATE collections_texts SET locale_id = 15 where market_id = 15;
+
+ALTER TABLE collections_texts DROP column market_id;
+
+ALTER TABLE collections_texts ALTER COLUMN locale_id SET NOT NULL;
+ALTER TABLE collections_texts ADD CONSTRAINT unique_slug UNIQUE (locale_id, slug);