migrate! macro not running subsequent migrations after initial

[dan-cooke]

I am a bit confused how I get sqlx migrate! to work when I have added a new migration script.

It seems to be checking for the presence of relation "_sqlx_migrations"

Hence the following alert message

relation \"_sqlx_migrations\" already exists, skipping

But this relation will exist upon running the very first migration command?

How am I supposed to get my binary to migrate the Db upon further migrations?

Relevant code:

use sqlx::{migrate, PgPool};
use tracing::instrument;

#[instrument(name = "Migrating database", skip(pool))]
pub async fn migrate_db(pool: &PgPool) {
    migrate!().run(pool).await.expect("DB Migration failed");
}

I have added a build.rs as well

// generated by `sqlx migrate build-script`
fn main() {
    // trigger recompilation when a new migration is added
    println!("cargo:rerun-if-changed=migrations");
}