If your app is integrating the PDFTron Android libraries using Gradle , you can simply update the version of the library referenced in your app's build.gradle file.

dependencies {
    ...
    // Latest version of the PDFTron Android SDK is 9.1.2
    implementation "com.pdftron:pdftron:9.1.2"
    implementation "com.pdftron:tools:9.1.2"
    implementation "com.pdftron:demo:9.1.2"
}

If your app is integrating our libraries manually by importing the AAR libraries, you will need to follow the same steps again whenever a new version of the PDFTronAndroid library zip is obtained.