diff --git a/.travis.yml b/.travis.yml
index 6731bef8d7..553dbe2b7a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,11 @@ stages:
     if: (branch = master AND type = push) OR (tag IS present)
 jobs:
   include:
+    - env: SCALA_VERSION=2.13
+      sudo: required
+      services: docker
+      before_install: ./scripts/setup-sbt-extra.sh
+      script: bin/sbt scala213 testsJVM/test
     - env: SCALA_VERSION=2.12 NATIVE=1
       sudo: required
       before_install: curl https://raw.githubusercontent.com/scala-native/scala-native/master/scripts/travis_setup.sh | bash -x
diff --git a/appveyor.yml b/appveyor.yml
index 75ec456ad6..e4a7d94aa4 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -30,8 +30,10 @@ build_script:
   - sbt scala212 coreJVM/publishLocal cacheJVM/publishLocal extra/publishLocal scalazJVM/publishLocal cli/publishLocal
   - sbt scala211 compile coreJVM/publishLocal
 test_script:
+  - sbt scala213 testsJVM/test
   - sbt scala212 testsJVM/test
   - sbt scala211 testsJVM/test
+  - sbt scala213 testsJVM/it:test
   - sbt scala212 testsJVM/it:test
   - sbt scala211 testsJVM/it:test
 branches:
diff --git a/modules/core/jvm/src/main/scala/coursier/core/compatibility/package.scala b/modules/core/jvm/src/main/scala/coursier/core/compatibility/package.scala
index c105e6dae5..07f3c9cc75 100644
--- a/modules/core/jvm/src/main/scala/coursier/core/compatibility/package.scala
+++ b/modules/core/jvm/src/main/scala/coursier/core/compatibility/package.scala
@@ -57,7 +57,7 @@ package object compatibility {
           helper(node.attributes).toVector
         }
         def label = node.label
-        def children = node.child.map(fromNode)
+        def children = node.child.map(fromNode).toSeq
         def isText = node match { case _: scala.xml.Text => true; case _ => false }
         def textContent = node.text
         def isElement = node match { case _: scala.xml.Elem => true; case _ => false }
diff --git a/project/ScalaVersion.scala b/project/ScalaVersion.scala
index 99bba2bb12..6a4e40adb7 100644
--- a/project/ScalaVersion.scala
+++ b/project/ScalaVersion.scala
@@ -1,10 +1,11 @@
 
 object ScalaVersion {
 
+  def scala213 = "2.13.0-M5"
   def scala212 = "2.12.8"
   def scala211 = "2.11.12"
 
-  val versions = Seq(scala212, scala211)
+  val versions = Seq(scala213, scala212, scala211)
 
   val map = versions
     .map { v =>