diff --git a/migrations/000.189.sql b/migrations/000.189.sql
new file mode 100644
index 0000000..34c97e7
--- /dev/null
+++ b/migrations/000.189.sql
@@ -0,0 +1,7 @@
+-- P5-5239: add slug to collections
+
+ALTER TABLE collections_texts
+    ADD COLUMN slug TEXT;
+
+
+ALTER TABLE collections_texts ADD CONSTRAINT unique_slug UNIQUE (market_id, slug);