diff --git a/outbox/create.go b/outbox/create.go
index 528713c4..0bdd36be 100644
--- a/outbox/create.go
+++ b/outbox/create.go
@@ -71,7 +71,7 @@ func Create(ctx context.Context, domain string, cfg *cfg.Config, log *slog.Logge
 		return fmt.Errorf("failed to insert note: %w", err)
 	}
 
-	if _, err = tx.ExecContext(ctx, `insert into outbox (activity, sender) values(?,?)`, j, author.ID); err != nil {
+	if _, err = tx.ExecContext(ctx, `insert into outbox (activity, sender) values(?,?)`, string(j), author.ID); err != nil {
 		return fmt.Errorf("failed to insert Create: %w", err)
 	}
 
diff --git a/outbox/delete.go b/outbox/delete.go
index 024080b8..48fd1d16 100644
--- a/outbox/delete.go
+++ b/outbox/delete.go
@@ -93,7 +93,7 @@ func Delete(ctx context.Context, domain string, cfg *cfg.Config, log *slog.Logge
 	if _, err := tx.ExecContext(
 		ctx,
 		`INSERT INTO outbox (activity, sender) VALUES (?,?)`,
-		j,
+		string(j),
 		note.AttributedTo,
 	); err != nil {
 		return fmt.Errorf("failed to insert delete activity: %w", err)
diff --git a/outbox/update.go b/outbox/update.go
index 15a9e44d..225d48fa 100644
--- a/outbox/update.go
+++ b/outbox/update.go
@@ -76,7 +76,7 @@ func UpdateNote(ctx context.Context, domain string, cfg *cfg.Config, log *slog.L
 	if _, err := tx.ExecContext(
 		ctx,
 		`INSERT INTO outbox (activity, sender) VALUES(?,?)`,
-		j,
+		string(j),
 		note.AttributedTo,
 	); err != nil {
 		return fmt.Errorf("failed to insert update activity: %w", err)