diff --git a/app/auth/views/github.py b/app/auth/views/github.py
index 6a23ab0d..7fb8c1c4 100644
--- a/app/auth/views/github.py
+++ b/app/auth/views/github.py
@@ -81,6 +81,7 @@ def github_callback():
     if not email:
         raise Exception("cannot get email for github user")
 
+    email = email.lower()
     user = User.get_by(email=email)
 
     # create user