The coordinates of the plugin have changed (inadvertently, same as in https://github.com/gradle/plugin-portal-requests/issues/124). If you are not using the plugin DSL, then you will need to change the dependency classpath from gradle.plugin.com.google.protobuf:protobuf-gradle-plugin to com.google.protobuf:protobuf-gradle-plugin when upgrading. I hope that's the only issue. I would fix it with another release, but it seems this is how Gradle wants it, because plugin-publish is removing an override.

Fixed bugs

• Fixed issue that would warn of https://github.com/google/protobuf-gradle-plugin/issues/248 with Android, even when it didn't make sense (#542). The plugin itself was at fault
• Fixed path-based protoc/plugin binaries to be considered for out-of-date checking (#560)

Improvements

• Avoid eager task loading (#544). This reduces the Gradle configuration time
• Ignore protoc/plugin artifact classifier for out-of-date checks (#560). This allows the Gradle cache to share results between platforms

Thanks to contributors

• @gavra0
• @larsgrefer
• @clayburn
• @rougsig
• @apatsekin