diff --git a/build.sbt b/build.sbt
index 9aa62dd..ca00735 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 import scala.util.matching.Regex.{Groups, Match}
 
-crossScalaVersions in ThisBuild := Seq("2.10.7", "2.11.12", "2.12.6", "2.13.0-M4")
+crossScalaVersions in ThisBuild := Seq("2.10.7", "2.11.12", "2.12.6", "2.13.0-RC2")
 
 val CovariantRegex = """extends TryTInstances0|covariant|\+\s*([A_])\b""".r
 
@@ -48,9 +48,8 @@ organization in ThisBuild := "com.thoughtworks.tryt"
 publishArtifact := false
 
 lazy val unidoc = project
-  .enablePlugins(StandaloneUnidoc, TravisUnidocTitle)
+  .enablePlugins(ScalaUnidocPlugin)
   .settings(
-    unidocProjectFilter in ScalaUnidoc in BaseUnidocPlugin.autoImport.unidoc := inProjects(invariantJVM, covariantJVM),
-    addCompilerPlugin("org.spire-math" %% "kind-projector" % "0.9.7"),
+    addCompilerPlugin("org.typelevel" %% "kind-projector" % "0.10.1"),
     scalacOptions += "-Xexperimental"
   )
diff --git a/covariant/.jvm/jvm.sbt b/covariant/.jvm/jvm.sbt
index 1a0a56f..9355fcc 100644
--- a/covariant/.jvm/jvm.sbt
+++ b/covariant/.jvm/jvm.sbt
@@ -1,4 +1,4 @@
-libraryDependencies += "org.scalaz" %% "scalaz-concurrent" % "7.2.26" % Test
+libraryDependencies += "org.scalaz" %% "scalaz-concurrent" % "7.2.27" % Test
 
 // Skip tests in Scala 2.13 for now due to https://github.com/scala/bug/issues/11068
 unmanagedSourceDirectories in Test --= {
diff --git a/covariant/build.sbt.shared b/covariant/build.sbt.shared
index 240ea21..74940d4 100644
--- a/covariant/build.sbt.shared
+++ b/covariant/build.sbt.shared
@@ -3,13 +3,13 @@ enablePlugins(Example)
 import scala.meta._
 exampleSuperTypes += ctor"_root_.org.scalatest.Inside"
 
-libraryDependencies += "org.scalaz" %%% "scalaz-core" % "7.2.26"
+libraryDependencies += "org.scalaz" %%% "scalaz-core" % "7.2.27"
 
-libraryDependencies += "org.scalaz" %%% "scalaz-effect" % "7.2.26"
+libraryDependencies += "org.scalaz" %%% "scalaz-effect" % "7.2.27"
 
-libraryDependencies += "org.scalatest" %%% "scalatest" % "3.0.6-SNAP2" % Test
+libraryDependencies += "org.scalatest" %%% "scalatest" % "3.1.0-SNAP11" % Test
 
-addCompilerPlugin("org.spire-math" %% "kind-projector" % "0.9.7")
+addCompilerPlugin("org.typelevel" %% "kind-projector" % "0.10.1")
 
 sourceGenerators in Test := {
   (sourceGenerators in Test).value.filterNot { sourceGenerator =>
diff --git a/invariant/build.sbt.shared b/invariant/build.sbt.shared
index 32c9dc7..6dcb7bc 100644
--- a/invariant/build.sbt.shared
+++ b/invariant/build.sbt.shared
@@ -3,15 +3,15 @@ enablePlugins(Example)
 import scala.meta._
 exampleSuperTypes += ctor"_root_.org.scalatest.Inside"
 
-libraryDependencies += "org.scalaz" %%% "scalaz-core" % "7.2.26"
+libraryDependencies += "org.scalaz" %%% "scalaz-core" % "7.2.27"
 
-libraryDependencies += "org.scalaz" %%% "scalaz-effect" % "7.2.26"
+libraryDependencies += "org.scalaz" %%% "scalaz-effect" % "7.2.27"
 
-libraryDependencies += "org.scalatest" %%% "scalatest" % "3.0.6-SNAP2" % Test
+libraryDependencies += "org.scalatest" %%% "scalatest" % "3.1.0-SNAP11" % Test
 
-libraryDependencies += "org.scalaz" %% "scalaz-concurrent" % "7.2.26" % Test
+libraryDependencies += "org.scalaz" %% "scalaz-concurrent" % "7.2.27" % Test
 
-addCompilerPlugin("org.spire-math" %% "kind-projector" % "0.9.7")
+addCompilerPlugin("org.typelevel" %% "kind-projector" % "0.10.1")
 
 sourceGenerators in Test := {
   (sourceGenerators in Test).value.filterNot { sourceGenerator =>
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 96e5a65..ad390b9 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,9 +1,9 @@
-addSbtPlugin("com.thoughtworks.sbt-best-practice" % "sbt-best-practice" % "4.0.2")
+addSbtPlugin("com.thoughtworks.sbt-best-practice" % "sbt-best-practice" % "7.0.1")
 
 addSbtPlugin("org.lyranthe.sbt" % "partial-unification" % "1.1.2")
 
-addSbtPlugin("com.thoughtworks.sbt-scala-js-map" % "sbt-scala-js-map" % "latest.release")
+addSbtPlugin("com.thoughtworks.sbt-scala-js-map" % "sbt-scala-js-map" % "4.0.0")
 
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "0.6.26")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "0.6.28")
 
 addSbtPlugin("com.thoughtworks.example" % "sbt-example" % "6.0.0")