<dependency>
  <groupId>postgresql</groupId>
  <artifactId>postgresql</artifactId>
  <version>9.1-901.jdbc4</version>
</dependency>

implementation 'postgresql:postgresql:9.1-901.jdbc4'

implementation("postgresql:postgresql:9.1-901.jdbc4")

libraryDependencies += "postgresql" % "postgresql" % "9.1-901.jdbc4"

@Grapes(
  @Grab(group='postgresql', module='postgresql', version='9.1-901.jdbc4')
)

<dependency org="postgresql" name="postgresql" rev="9.1-901.jdbc4" />

[postgresql/postgresql "9.1-901.jdbc4"]

'postgresql:postgresql:jar:9.1-901.jdbc4'