diff --git a/packages/db/migrations/0127.do.replace_unique_index_on_library_item.sql b/packages/db/migrations/0127.do.replace_unique_index_on_library_item.sql
new file mode 100755
index 000000000..2231e8c0f
--- /dev/null
+++ b/packages/db/migrations/0127.do.replace_unique_index_on_library_item.sql
@@ -0,0 +1,10 @@
+-- Type: DO
+-- Name: replace_unique_index_on_library_item
+-- Description: Create a unique index of MD5 hashed url and userId on library item table
+
+BEGIN;
+
+ALTER TABLE omnivore.library_item DROP CONSTRAINT IF EXISTS library_item_user_id_original_url_key;
+CREATE UNIQUE INDEX library_item_user_id_hashed_original_url_key ON omnivore.library_item (user_id, md5(original_url));
+
+COMMIT;
diff --git a/packages/db/migrations/0127.undo.replace_unique_index_on_library_item.sql b/packages/db/migrations/0127.undo.replace_unique_index_on_library_item.sql
new file mode 100755
index 000000000..e5329d07a
--- /dev/null
+++ b/packages/db/migrations/0127.undo.replace_unique_index_on_library_item.sql
@@ -0,0 +1,10 @@
+-- Type: UNDO
+-- Name: replace_unique_index_on_library_item
+-- Description: Create a unique index of MD5 hashed url and userId on library item table
+
+BEGIN;
+
+DROP INDEX IF EXISTS omnivore.library_item_user_id_hashed_original_url_key;
+ALTER TABLE omnivore.library_item ADD CONSTRAINT library_item_user_id_original_url_key UNIQUE (user_id, original_url);
+
+COMMIT;