Miss-typed how much I added to traditional IRA in 2020

This was my first year using Webull and first year having an IRA.  Due to the way the app is, I thought I had deposited $5000 in my IRA in 2020, but after reviewing my bank records, I now see it was only $4000.  I already submitted my return and it was accepted.  Will I need to file an amended return or just deposit an extra $1000 before April 15th into the 2020 IRA year?

 

Thanks!