diff --git a/backend/src/activitypub/actors/index.ts b/backend/src/activitypub/actors/index.ts
index 0b622f1..3bd94e2 100644
--- a/backend/src/activitypub/actors/index.ts
+++ b/backend/src/activitypub/actors/index.ts
@@ -224,14 +224,24 @@ export async function updateActorProperty(db: Database, actorId: URL, key: strin
 }
 
 export async function setActorAlias(db: Database, actorId: URL, alias: URL) {
-	const { success, error } = await db
-		.prepare(
-			`UPDATE actors SET properties=${db.qb.jsonSet('properties', 'alsoKnownAs', db.qb.jsonArray('?1'))} WHERE id=?2`
-		)
-		.bind(alias.toString(), actorId.toString())
-		.run()
-	if (!success) {
-		throw new Error('SQL error: ' + error)
+	if (db.client === 'neon') {
+		const { success, error } = await db
+			.prepare(`UPDATE actors SET properties=${db.qb.jsonSet('properties', 'alsoKnownAs,0', '?1')} WHERE id=?2`)
+			.bind('"' + alias.toString() + '"', actorId.toString())
+			.run()
+		if (!success) {
+			throw new Error('SQL error: ' + error)
+		}
+	} else {
+		const { success, error } = await db
+			.prepare(
+				`UPDATE actors SET properties=${db.qb.jsonSet('properties', 'alsoKnownAs', 'json_array(?1)')} WHERE id=?2`
+			)
+			.bind(alias.toString(), actorId.toString())
+			.run()
+		if (!success) {
+			throw new Error('SQL error: ' + error)
+		}
 	}
 }
 
@@ -246,7 +256,16 @@ export async function getActorById(db: Database, id: URL): Promise<Actor | null>
 }
 
 export function personFromRow(row: any): Person {
-	const properties = JSON.parse(row.properties) as PersonProperties
+	let properties
+	if (typeof row.properties === 'object') {
+		// neon uses JSONB for properties which is returned as a deserialized
+		// object.
+		properties = row.properties as PersonProperties
+	} else {
+		// D1 uses a string for JSON properties
+		properties = JSON.parse(row.properties) as PersonProperties
+	}
+
 	const icon = properties.icon ?? {
 		type: 'Image',
 		mediaType: 'image/jpeg',
diff --git a/backend/src/database/d1.ts b/backend/src/database/d1.ts
index e5a4ca9..f13b433 100644
--- a/backend/src/database/d1.ts
+++ b/backend/src/database/d1.ts
@@ -26,10 +26,6 @@ const qb: QueryBuilder = {
 		return ''
 	},
 
-	jsonArray(r: string): string {
-		return `json_array(${r})`
-	},
-
 	jsonSet(obj: string, field: string, value: string): string {
 		return `json_set(${obj}, '$.${field}', ${value})`
 	},
diff --git a/backend/src/database/index.ts b/backend/src/database/index.ts
index bb6f685..9e17829 100644
--- a/backend/src/database/index.ts
+++ b/backend/src/database/index.ts
@@ -33,7 +33,6 @@ export interface QueryBuilder {
 	epoch(): string
 	insertOrIgnore(q: string): string
 	psqlOnly(raw: string): string
-	jsonArray(r: string): string
 	jsonSet(obj: string, field: string, value: string): string
 }
 
diff --git a/backend/src/database/neon.ts b/backend/src/database/neon.ts
index 062cc59..0dde858 100644
--- a/backend/src/database/neon.ts
+++ b/backend/src/database/neon.ts
@@ -12,7 +12,7 @@ function sqliteToPsql(query: string): string {
 
 const qb: QueryBuilder = {
 	jsonExtract(obj: string, prop: string): string {
-		return `json_extract_path(${obj}::json, '${prop}')::text`
+		return `jsonb_extract_path(${obj}, '${prop}')::text`
 	},
 
 	jsonExtractIsNull(obj: string, prop: string): string {
@@ -35,12 +35,8 @@ const qb: QueryBuilder = {
 		return q
 	},
 
-	jsonArray(r: string): string {
-		return `json_array_elements_text(${r})`
-	},
-
 	jsonSet(obj: string, field: string, value: string): string {
-		return `jsonb_set(${obj}, '${field}', ${value})`
+		return `jsonb_set(${obj}, '{${field}}', ${value})`
 	},
 }