diff --git a/src/sentry/api/serializers/models/user.py b/src/sentry/api/serializers/models/user.py
index 62abe9c37360..49c162cea939 100644
--- a/src/sentry/api/serializers/models/user.py
+++ b/src/sentry/api/serializers/models/user.py
@@ -72,6 +72,7 @@ def serialize(self, obj, attrs, user):
             'dateJoined': obj.date_joined,
             'lastLogin': obj.last_login,
             'has2fa': attrs['has2fa'],
+            'lastActive': obj.last_active,
         }
 
         if obj == user: