<dependency>
  <groupId>com.google.protobuf</groupId>
  <artifactId>protobuf-bom</artifactId>
  <version>3.15.3</version>
  <type>pom</type>
</dependency>

implementation 'com.google.protobuf:protobuf-bom:3.15.3'

implementation("com.google.protobuf:protobuf-bom:3.15.3")

libraryDependencies += "com.google.protobuf" % "protobuf-bom" % "3.15.3"

@Grapes(
  @Grab(group='com.google.protobuf', module='protobuf-bom', version='3.15.3')
)

<dependency org="com.google.protobuf" name="protobuf-bom" rev="3.15.3" />

[com.google.protobuf/protobuf-bom "3.15.3"]

'com.google.protobuf:protobuf-bom:jar:3.15.3'