diff --git a/packages/backend/src/graphql/mutations/login.ts b/packages/backend/src/graphql/mutations/login.ts
index 121f4269..837b47ee 100644
--- a/packages/backend/src/graphql/mutations/login.ts
+++ b/packages/backend/src/graphql/mutations/login.ts
@@ -13,7 +13,7 @@ const TOKEN_EXPIRES_IN = '14d';
 
 const login = async (_parent: unknown, params: Params) => {
   const user = await User.query().findOne({
-    email: params.input.email,
+    email: params.input.email.toLowerCase(),
   });
 
   if (user && (await user.login(params.input.password))) {