diff --git a/migrations/000.255.sql b/migrations/000.255.sql
new file mode 100644
index 0000000..aad51fd
--- /dev/null
+++ b/migrations/000.255.sql
@@ -0,0 +1,15 @@
+-- P5-6103 Add i18n-texts_data.locale_id
+
+ALTER TABLE "i18n-texts_data" ADD COLUMN locale_id INTEGER;
+
+ALTER TABLE "i18n-texts_data"
+    ADD CONSTRAINT locale_fkey
+    FOREIGN KEY (locale_id)
+    REFERENCES locales(id) MATCH SIMPLE;
+
+-- Populate locale ids 
+UPDATE "i18n-texts_data" SET locale_id = (SELECT id FROM locales WHERE value = language || '_' || territory);
+
+-- Add not null constraint
+ALTER TABLE "i18n-texts_data" ALTER COLUMN locale_id SET NOT NULL;
+