diff --git a/src/activitypub/helpers.js b/src/activitypub/helpers.js
index 07f433b8f1..0cf0ff87de 100644
--- a/src/activitypub/helpers.js
+++ b/src/activitypub/helpers.js
@@ -256,7 +256,10 @@ Helpers.resolveObjects = async (ids) => {
 				const post = (await posts.getPostSummaryByPids(
 					[resolvedId],
 					activitypub._constants.uid,
-					{ stripTags: false }
+					{
+						stripTags: false,
+						extraFields: ['edited'],
+					}
 				)).pop();
 				if (!post) {
 					throw new Error('[[error:activitypub.invalid-id]]');
diff --git a/src/activitypub/mocks.js b/src/activitypub/mocks.js
index 6304c26daa..cb02ae12be 100644
--- a/src/activitypub/mocks.js
+++ b/src/activitypub/mocks.js
@@ -277,7 +277,8 @@ Mocks.note = async (post) => {
 		});
 	}
 
-	const published = new Date(parseInt(post.timestamp, 10)).toISOString();
+	const published = post.timestampISO;
+	const updated = post.edited ? post.editedISO : null;
 
 	// todo: post visibility
 	const to = new Set([activitypub._constants.publicAddress]);
@@ -420,6 +421,7 @@ Mocks.note = async (post) => {
 		cc: Array.from(cc),
 		inReplyTo,
 		published,
+		updated,
 		url: id,
 		attributedTo: `${nconf.get('url')}/uid/${post.user.uid}`,
 		context: `${nconf.get('url')}/topic/${post.topic.tid}`,
diff --git a/src/api/posts.js b/src/api/posts.js
index e56a4a125b..3c90ee4f92 100644
--- a/src/api/posts.js
+++ b/src/api/posts.js
@@ -207,7 +207,7 @@ async function deleteOrRestore(caller, data, params) {
 	});
 
 	// Explicitly non-awaited
-	posts.getPostSummaryByPids([data.pid], caller.uid, {}).then(([post]) => {
+	posts.getPostSummaryByPids([data.pid], caller.uid, { extraFields: ['edited'] }).then(([post]) => {
 		require('.').activitypub.update.note(caller, { post });
 	});
 }
diff --git a/src/controllers/activitypub/actors.js b/src/controllers/activitypub/actors.js
index 49e906bb0a..d82e38bd2c 100644
--- a/src/controllers/activitypub/actors.js
+++ b/src/controllers/activitypub/actors.js
@@ -58,7 +58,10 @@ Actors.note = async function (req, res) {
 	// technically a note isn't an actor, but it is here purely for organizational purposes.
 	// but also, wouldn't it be wild if you could follow a note? lol.
 	const allowed = utils.isNumber(req.params.pid) && await privileges.posts.can('topics:read', req.params.pid, activitypub._constants.uid);
-	const post = (await posts.getPostSummaryByPids([req.params.pid], req.uid, { stripTags: false })).pop();
+	const post = (await posts.getPostSummaryByPids([req.params.pid], req.uid, {
+		stripTags: false,
+		extraFields: ['edited'],
+	})).pop();
 	if (!allowed || !post) {
 		return res.sendStatus(404);
 	}