diff --git a/docs/CHANGELOG.rst b/docs/CHANGELOG.rst
index 3d15736a..2b307bac 100644
--- a/docs/CHANGELOG.rst
+++ b/docs/CHANGELOG.rst
@@ -4,9 +4,9 @@ Change Log
 
 All notable changes to this project are documented in this file.
 
-==========
-Unreleased
-==========
+===================
+22.2.1 - 2025-11-19
+===================
 
 Fixed
 -----
@@ -14,6 +14,7 @@ Fixed
 - Fix a bug in ``QCTables`` where the removal of sample name suffixes
   in MultiQC ``.txt`` files leads to incorrect parsing of MACS prepeak tables
 - Rewrite ``Collection`` shortcuts to use new syntax
+- Fix a bug that caused crash when saving ``Relation`` resource
 
 
 ===================
diff --git a/src/resdk/resources/fields.py b/src/resdk/resources/fields.py
index 3be487db..a924ca92 100644
--- a/src/resdk/resources/fields.py
+++ b/src/resdk/resources/fields.py
@@ -476,6 +476,11 @@ def __get__(
         self._checks_before_get(instance)
         return getattr(instance, self._value_attribute_name, None)
 
+    def changed(self, instance: "BaseResource") -> bool:
+        """Check if the field value has changed."""
+        # Lazy resource fields are read-only so they can never be changed.
+        return False
+
 
 class QueryRelatedField(LazyResourceField):
     """Lazy load resources from another resource query.