diff --git a/sbt/src/sbt-test/plugins/dotty-compiler-plugin/build.sbt b/sbt/src/sbt-test/plugins/dotty-compiler-plugin/build.sbt
index 4d6fc4fd4..8aabedac8 100644
--- a/sbt/src/sbt-test/plugins/dotty-compiler-plugin/build.sbt
+++ b/sbt/src/sbt-test/plugins/dotty-compiler-plugin/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "0.27.0-RC1"
+ThisBuild / scalaVersion := "3.0.0-M1"
 
 lazy val plugin = project
   .in(file("plugin"))
diff --git a/sbt/src/sbt-test/plugins/dotty-compiler-plugin/changes/build.sbt b/sbt/src/sbt-test/plugins/dotty-compiler-plugin/changes/build.sbt
index 50c9cf724..584adf234 100644
--- a/sbt/src/sbt-test/plugins/dotty-compiler-plugin/changes/build.sbt
+++ b/sbt/src/sbt-test/plugins/dotty-compiler-plugin/changes/build.sbt
@@ -1,4 +1,4 @@
-lazy val dottyVersion = "0.27.0-RC1"
+lazy val dottyVersion = "3.0.0-M1"
 
 lazy val plugin = project
   .in(file("plugin"))
diff --git a/sbt/src/sbt-test/plugins/dotty-compiler-plugin/project/plugins.sbt b/sbt/src/sbt-test/plugins/dotty-compiler-plugin/project/plugins.sbt
index 59d5793ef..83a3da10f 100644
--- a/sbt/src/sbt-test/plugins/dotty-compiler-plugin/project/plugins.sbt
+++ b/sbt/src/sbt-test/plugins/dotty-compiler-plugin/project/plugins.sbt
@@ -1 +1 @@
-addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.3")
+addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.6")
diff --git a/sbt/src/sbt-test/plugins/dotty-sandwich-sjs/build.sbt b/sbt/src/sbt-test/plugins/dotty-sandwich-sjs/build.sbt
index 06804de99..9e2883f48 100644
--- a/sbt/src/sbt-test/plugins/dotty-sandwich-sjs/build.sbt
+++ b/sbt/src/sbt-test/plugins/dotty-sandwich-sjs/build.sbt
@@ -1,17 +1,15 @@
-// TODO use 2.13.4 when it's out
-ThisBuild / scalaVersion := "2.13.4-bin-d526da6"
-
-Global / resolvers += "scala-integration".at("https://scala-ci.typesafe.com/artifactory/scala-integration/")
+ThisBuild / scalaVersion := "2.13.4"
+ThisBuild / scalacOptions += "-Ytasty-reader"
 
 lazy val scala3code = project
   .enablePlugins(ScalaJSPlugin)
-  .settings(scalaVersion := "0.27.0-RC1")
+  .settings(scalaVersion := "3.0.0-M1")
 
 lazy val app = project
   .enablePlugins(ScalaJSPlugin)
   .dependsOn(scala3code)
   .settings(
     libraryDependencies ~= (_.filterNot(_.name.contains("scalajs-compiler"))),
-    addCompilerPlugin("org.scala-js" % "scalajs-compiler_2.13.3" % scalaJSVersion),
+    addCompilerPlugin("org.scala-js" % "scalajs-compiler_2.13.4" % scalaJSVersion),
     scalaJSUseMainModuleInitializer := true,
   )
diff --git a/sbt/src/sbt-test/plugins/dotty-sandwich-sjs/project/plugins.sbt b/sbt/src/sbt-test/plugins/dotty-sandwich-sjs/project/plugins.sbt
index 289edbdba..f0dfae12d 100644
--- a/sbt/src/sbt-test/plugins/dotty-sandwich-sjs/project/plugins.sbt
+++ b/sbt/src/sbt-test/plugins/dotty-sandwich-sjs/project/plugins.sbt
@@ -1,2 +1,2 @@
-addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.3")
+addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.6")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.3.0")
diff --git a/sbt/src/sbt-test/plugins/dotty-sandwich/build.sbt b/sbt/src/sbt-test/plugins/dotty-sandwich/build.sbt
index 0669df9fc..d6b4a9a34 100644
--- a/sbt/src/sbt-test/plugins/dotty-sandwich/build.sbt
+++ b/sbt/src/sbt-test/plugins/dotty-sandwich/build.sbt
@@ -1,8 +1,7 @@
-ThisBuild / scalaVersion := "0.27.0-RC1"
+ThisBuild / scalaVersion := "3.0.0-M1"
+ThisBuild / scalacOptions += "-Ytasty-reader"
 
-ThisBuild / resolvers += "scala-integration" at "https://scala-ci.typesafe.com/artifactory/scala-integration/"
-// TODO use 2.13.4 when it's out
-lazy val scala213 = "2.13.4-bin-d526da6"
+lazy val scala213 = "2.13.4"
 
 lazy val root = (project in file("."))
   .aggregate(fooApp, fooCore, barApp, barCore)
diff --git a/sbt/src/sbt-test/plugins/dotty-sandwich/project/plugins.sbt b/sbt/src/sbt-test/plugins/dotty-sandwich/project/plugins.sbt
index 59d5793ef..83a3da10f 100644
--- a/sbt/src/sbt-test/plugins/dotty-sandwich/project/plugins.sbt
+++ b/sbt/src/sbt-test/plugins/dotty-sandwich/project/plugins.sbt
@@ -1 +1 @@
-addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.3")
+addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.6")
diff --git a/sbt/src/sbt-test/plugins/dotty/build.sbt b/sbt/src/sbt-test/plugins/dotty/build.sbt
index ea167c1f8..e80bfb07c 100644
--- a/sbt/src/sbt-test/plugins/dotty/build.sbt
+++ b/sbt/src/sbt-test/plugins/dotty/build.sbt
@@ -1 +1 @@
-ThisBuild / scalaVersion := "0.27.0-RC1"
+ThisBuild / scalaVersion := "3.0.0-M1"
diff --git a/sbt/src/sbt-test/plugins/dotty/project/plugins.sbt b/sbt/src/sbt-test/plugins/dotty/project/plugins.sbt
index 59d5793ef..83a3da10f 100644
--- a/sbt/src/sbt-test/plugins/dotty/project/plugins.sbt
+++ b/sbt/src/sbt-test/plugins/dotty/project/plugins.sbt
@@ -1 +1 @@
-addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.3")
+addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.6")