diff --git a/extensions/linz/schema.json b/extensions/linz/schema.json
index 7130e3dc..c877ff67 100644
--- a/extensions/linz/schema.json
+++ b/extensions/linz/schema.json
@@ -1040,7 +1040,6 @@
         },
         "summaries": {
           "type": "object",
-          "required": ["created", "updated"],
           "properties": {
             "created": {
               "type": "object",
diff --git a/extensions/linz/tests/linz_collection.test.js b/extensions/linz/tests/linz_collection.test.js
index 9dea747c..1fa22a0d 100644
--- a/extensions/linz/tests/linz_collection.test.js
+++ b/extensions/linz/tests/linz_collection.test.js
@@ -85,7 +85,7 @@ o.spec('LINZ collection', () => {
     ).equals(true)(JSON.stringify(validate.errors));
   });
 
-  o("Summaries with no 'created' property should fail validation", async () => {
+  o("Summaries with no 'created' property should not fail validation", async () => {
     // given
     const example = JSON.parse(await fs.readFile(examplePath));
     delete example['summaries']['created'];
@@ -94,12 +94,19 @@ o.spec('LINZ collection', () => {
     let valid = validate(example);
 
     // then
-    o(valid).equals(false);
-    o(
-      validate.errors.some(
-        (error) => error.instancePath === '/summaries' && error.message === "must have required property 'created'",
-      ),
-    ).equals(true)(JSON.stringify(validate.errors));
+    o(valid).equals(true);
+  });
+
+  o("Summaries with no 'updated' property should not fail validation", async () => {
+    // given
+    const example = JSON.parse(await fs.readFile(examplePath));
+    delete example['summaries']['updated'];
+
+    // when
+    let valid = validate(example);
+
+    // then
+    o(valid).equals(true);
   });
 
   o("Example with no 'linz:geospatial_type' property should fail validation", async () => {