diff --git a/src/schema.py b/src/schema.py
index 7529c46..b8d3504 100644
--- a/src/schema.py
+++ b/src/schema.py
@@ -116,7 +116,7 @@ def user_external(
         "quip":      quip,
         "bio":       bio,
         "color":     color,
-        "is_admin":  admin,
+        "is_admin":  bool(admin),
         "created":   created
     }