diff --git a/CHANGES.rst b/CHANGES.rst
index 550a544..5e7a4c7 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,7 +4,9 @@ Changelog
 5.1 (unreleased)
 ----------------
 
-- Nothing changed yet.
+- Fix Zope test failures accessing sequence wrappers introduced in #76
+  from untrusted code.
+  (`#81 <https://github.com/zopefoundation/DocumentTemplate/issues/81>`_)
 
 
 5.0 (2025-11-27)
diff --git a/src/DocumentTemplate/DT_Util.py b/src/DocumentTemplate/DT_Util.py
index ecb63a6..9b43eb2 100644
--- a/src/DocumentTemplate/DT_Util.py
+++ b/src/DocumentTemplate/DT_Util.py
@@ -479,6 +479,8 @@ def sequence_ensure_subscription(obj):
 class SequenceFromIter:
     """Iterator wrapper supporting lazy sequence subscription."""
 
+    __allow_access_to_unprotected_subobjects__ = 1
+
     finished = False
 
     def __init__(self, it):