diff --git a/.travis.yml b/.travis.yml
index 13cde04cd..9401fdafb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ jdk:
 
 scala:
   - 2.12.8
-  - 2.13.0-RC2
+  - 2.13.0-RC3
   - 0.15.0-RC1
 
 env:
@@ -20,21 +20,21 @@ env:
   matrix:
     # The empty SCALAJS_VERSION will only compile for the JVM
     - SCALAJS_VERSION=
-    - SCALAJS_VERSION=0.6.27
-    - SCALAJS_VERSION=1.0.0-M7
+    - SCALAJS_VERSION=0.6.28
+    - SCALAJS_VERSION=1.0.0-M8
 
 matrix:
   exclude:
     - jdk: openjdk11
-      env: SCALAJS_VERSION=0.6.27
+      env: SCALAJS_VERSION=0.6.28
     - jdk: openjdk11
-      env: SCALAJS_VERSION=1.0.0-M7
+      env: SCALAJS_VERSION=1.0.0-M8
     - scala: 0.15.0-RC1
-      env: SCALAJS_VERSION=0.6.27
+      env: SCALAJS_VERSION=0.6.28
     - scala: 0.15.0-RC1
-      env: SCALAJS_VERSION=1.0.0-M7
+      env: SCALAJS_VERSION=1.0.0-M8
 
-script: 
+script:
   - admin/build.sh
 
 before_cache:
diff --git a/README.md b/README.md
index f17c1947d..6a3d1c824 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@ scala-xml
 [![Travis](https://img.shields.io/travis/scala/scala-xml.svg)](https://travis-ci.org/scala/scala-xml)
 [![latest release for 2.11](https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-xml_2.11.svg?label=scala+2.11)](http://mvnrepository.com/artifact/org.scala-lang.modules/scala-xml_2.11)
 [![latest release for 2.12](https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-xml_2.12.svg?label=scala+2.12)](http://mvnrepository.com/artifact/org.scala-lang.modules/scala-xml_2.12)
-[![latest release for 2.13.0-RC2](https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-xml_2.13.0-RC2.svg?label=scala+2.13.0-RC2)](http://mvnrepository.com/artifact/org.scala-lang.modules/scala-xml_2.13.0-RC2)
+[![latest release for 2.13.0-RC3](https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-xml_2.13.0-RC3.svg?label=scala+2.13.0-RC3)](http://mvnrepository.com/artifact/org.scala-lang.modules/scala-xml_2.13.0-RC3)
 [![Gitter](https://badges.gitter.im/Join+Chat.svg)](https://gitter.im/scala/scala-xml)
 =========
 
diff --git a/build.sbt b/build.sbt
index 590bb9d18..f47b6fb3a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,7 +2,7 @@ import sbtcrossproject.CrossType
 import sbtcrossproject.CrossPlugin.autoImport.crossProject
 import ScalaModulePlugin._
 
-crossScalaVersions in ThisBuild := List("2.12.8", "2.13.0-RC2")
+crossScalaVersions in ThisBuild := List("2.12.8", "2.13.0-RC3")
 
 lazy val configSettings: Seq[Setting[_]] = Seq(
   unmanagedSourceDirectories ++= {
@@ -50,7 +50,8 @@ lazy val xml = crossProject(JSPlatform, JVMPlatform)
     scalacOptions in Test  += "-Xxml:coalescing",
 
     mimaPreviousVersion := {
-      Some("1.2.0")
+      if (System.getenv("SCALAJS_VERSION") == "1.0.0-M8") None // No such release yet
+      else Some("1.2.0")
     },
     mimaBinaryIssueFilters ++= {
       import com.typesafe.tools.mima.core._
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 3d7dda9d8..0d0418e6d 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,7 +1,7 @@
 addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.9.5")
 
 val scalaJSVersion =
-  Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("0.6.27")
+  Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("0.6.28")
 
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % scalaJSVersion)
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "0.6.0")