Can I delete my pepk file after uploading it to Google Play?

To my understanding, a .pepk file is only used by Google Play to sign my app on their end. After sending them the .pepk file, I generate my own Java Keystore which contains a key to sign subsequent releases of my app. The .jks file is also used to generate a certificate for the upload key (.pem) which is also uploaded to Google Play. This leads me to believe that I only need to keep the .jks and .pem files, and not the .pepk file correct?