diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index e6c8fef..d215382 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -13,6 +13,7 @@ sqlalchemy = {extras = ["asyncio"], version = "^2.0.25"}
 alembic = "^1.13.1"
 pydantic = "^2.5.3"
 pydantic-settings = "^2.1.0"
+email-validator = "^2.1.0"
 python-jose = {extras = ["cryptography"], version = "^3.3.0"}
 passlib = {extras = ["bcrypt"], version = "^1.7.4"}
 python-multipart = "^0.0.6"