diff --git a/backend/requirements.txt b/backend/requirements.txt
index c9e98b4..3d6acf0 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -14,3 +14,4 @@ pytest-cov>=5.0.0
 aiosqlite>=0.20.0
 Pillow>=10.0.0
 weasyprint>=62.0
+email-validator>=2.0.0