diff --git a/project/build.properties b/project/build.properties
index 7c58a83abf..72f902892a 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.2.6
+sbt.version=1.2.7
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 1a182ee934..90fa258346 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,7 +1,7 @@
 // need this to resolve http://jcenter.bintray.com/org/jenkins-ci/jenkins/1.26/
 // which is used by plugin "org.kohsuke" % "github-api" % "1.68"
 resolvers += "Bintray Jcenter" at "https://jcenter.bintray.com/"
-libraryDependencies += "org.kohsuke" % "github-api" % "1.93"
+libraryDependencies += "org.kohsuke" % "github-api" % "1.95"
 
 // these comment markers are for including code into the docs
 //#sbt-multi-jvm
@@ -11,18 +11,18 @@ addSbtPlugin("com.typesafe.sbt" % "sbt-multi-jvm" % "0.4.0")
 addSbtPlugin("org.scalariform" % "sbt-scalariform" % "1.8.2")
 addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.9.4")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.3.0")
-addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.1.1")
+addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.1.2")
 addSbtPlugin("com.eed3si9n" % "sbt-unidoc" % "0.4.2")
 addSbtPlugin("com.thoughtworks.sbt-api-mappings" % "sbt-api-mappings" % "2.1.0")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.3.4")
-addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.3.5")
+addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.3.15")
 addSbtPlugin("io.spray" % "sbt-boilerplate" % "0.6.1")
 addSbtPlugin("com.timushev.sbt" % "sbt-updates" % "0.3.4")
 addSbtPlugin("com.lightbend.akka" % "sbt-paradox-akka" % "0.14")
-addSbtPlugin("com.lightbend" % "sbt-whitesource" % "0.1.12")
+addSbtPlugin("com.lightbend" % "sbt-whitesource" % "0.1.13")
 addSbtPlugin("com.typesafe.sbt" % "sbt-git" % "1.0.0")
 addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % "0.9.1") // for advanced PR validation features
 addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.0.0") // for maintenance of copyright file header
 
 // used for @unidoc directive
-libraryDependencies += "io.github.classgraph" % "classgraph" % "4.2.12"
+libraryDependencies += "io.github.classgraph" % "classgraph" % "4.4.12"