diff --git a/backend/src/mastodon/notification.ts b/backend/src/mastodon/notification.ts
index 8d9690a..2272305 100644
--- a/backend/src/mastodon/notification.ts
+++ b/backend/src/mastodon/notification.ts
@@ -225,7 +225,15 @@ export async function getNotifications(db: Database, actor: Actor, domain: strin
 
 	for (let i = 0, len = results.length; i < len; i++) {
 		const result = results[i]
-		const properties = JSON.parse(result.properties)
+		let properties
+		if (typeof result.properties === 'object') {
+			// neon uses JSONB for properties which is returned as a deserialized
+			// object.
+			properties = result.properties
+		} else {
+			// D1 uses a string for JSON properties
+			properties = JSON.parse(result.properties)
+		}
 		const notifFromActorId = new URL(result.notif_from_actor_id)
 
 		const notifFromActor = await getActorById(db, notifFromActorId)
diff --git a/backend/src/mastodon/status.ts b/backend/src/mastodon/status.ts
index ccbc532..c9ca683 100644
--- a/backend/src/mastodon/status.ts
+++ b/backend/src/mastodon/status.ts
@@ -105,7 +105,15 @@ export async function toMastodonStatusFromRow(domain: string, db: Database, row:
 		console.warn('missing `row.publisher_actor_id`')
 		return null
 	}
-	const properties = JSON.parse(row.properties)
+	let properties
+	if (typeof row.properties === 'object') {
+		// neon uses JSONB for properties which is returned as a deserialized
+		// object.
+		properties = row.properties
+	} else {
+		// D1 uses a string for JSON properties
+		properties = JSON.parse(row.properties)
+	}
 	const actorId = new URL(row.publisher_actor_id)
 
 	const author = actors.personFromRow({