diff --git a/mozilla_django_oidc_db/fields.py b/mozilla_django_oidc_db/fields.py
index 9d6e318..d141fb3 100644
--- a/mozilla_django_oidc_db/fields.py
+++ b/mozilla_django_oidc_db/fields.py
@@ -33,6 +33,9 @@ def __eq__(self, other) -> bool:
     def __call__(self) -> list[str]:
         return self.bits
 
+    def __hash__(self) -> int:
+        return hash(tuple(self.bits))
+
 
 class ClaimField(ArrayField):
     """