diff --git a/backend/migrations/202503240002_unique_document_names/down.sql b/backend/migrations/202503240002_unique_document_names/down.sql
new file mode 100644
index 0000000..648a7ed
--- /dev/null
+++ b/backend/migrations/202503240002_unique_document_names/down.sql
@@ -0,0 +1,16 @@
+DROP INDEX IF EXISTS documents_unique_folder_filename;
+DROP INDEX IF EXISTS idx_documents_folder_title;
+
+CREATE INDEX idx_documents_folder_title
+    ON documents (
+        COALESCE(folder_id, '00000000-0000-0000-0000-000000000000'::uuid),
+        title
+    )
+    WHERE deleted_at IS NULL;
+
+CREATE INDEX idx_documents_folder_filename
+    ON documents (
+        COALESCE(folder_id, '00000000-0000-0000-0000-000000000000'::uuid),
+        filename
+    )
+    WHERE deleted_at IS NULL;
diff --git a/backend/migrations/202503240002_unique_document_names/up.sql b/backend/migrations/202503240002_unique_document_names/up.sql
new file mode 100644
index 0000000..a48b8b3
--- /dev/null
+++ b/backend/migrations/202503240002_unique_document_names/up.sql
@@ -0,0 +1,18 @@
+DROP INDEX IF EXISTS idx_documents_folder_title;
+DROP INDEX IF EXISTS idx_documents_folder_filename;
+DROP INDEX IF EXISTS documents_unique_folder_title;
+DROP INDEX IF EXISTS documents_unique_folder_filename;
+
+CREATE INDEX idx_documents_folder_title
+    ON documents (
+        COALESCE(folder_id, '00000000-0000-0000-0000-000000000000'::uuid),
+        title
+    )
+    WHERE deleted_at IS NULL;
+
+CREATE UNIQUE INDEX documents_unique_folder_filename
+    ON documents (
+        COALESCE(folder_id, '00000000-0000-0000-0000-000000000000'::uuid),
+        filename
+    )
+    WHERE deleted_at IS NULL;