The old sbt-pgp 0.8.3 is no longer supported in sbt 0.13.5+.

Sam Smoot · Sam Smoot · commit a4fa913f249f · 2016-04-20T15:08:50.000-05:00
diff --git a/project/plugins.sbt b/project/plugins.sbt
@@ -1,4 +1,4 @@
-addSbtPlugin("com.typesafe.sbt" % "sbt-pgp" % "0.8.3")
+addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.0.0")
 
 addSbtPlugin("org.scalariform" % "sbt-scalariform" % "1.4.0")
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-addSbtPlugin("com.typesafe.sbt" % "sbt-pgp" % "0.8.3")`
	`1`	`+addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.0.0")`
`2`	`2`
`3`	`3`	`addSbtPlugin("org.scalariform" % "sbt-scalariform" % "1.4.0")`
`4`	`4`