diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4fbe3931..11749dbc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
       github.event.pull_request.user.login == 'softwaremill-ci'
     strategy:
       matrix:
-        java: [ '11', '17', '21' ]
+        java: [ '17', '21' ]
       fail-fast: false
     with:
       java-version: ${{ matrix.java }}
diff --git a/.scalafmt.conf b/.scalafmt.conf
index 4dffb6f5..0d989cc2 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -5,4 +5,7 @@ fileOverride {
   "glob:**/scala-3/**" {
     runner.dialect = scala3
   }
-}
\ No newline at end of file
+  "glob:**.sbt" {
+    runner.dialect = scala3
+  }
+}
diff --git a/build.sbt b/build.sbt
index abcb38c0..846b5e94 100644
--- a/build.sbt
+++ b/build.sbt
@@ -5,7 +5,7 @@ import com.softwaremill.UpdateVersionInDocs
 import sbt._
 import sbt.Keys._
 
-excludeLintKeys in Global ++= Set(ideSkipProject)
+Global / excludeLintKeys ++= Set(ideSkipProject)
 
 val scala2_12 = "2.12.21"
 val scala2_13 = "2.13.18"
@@ -49,63 +49,51 @@ val versionSpecificScalaSources = {
   }
 }
 
-val commonSettings = commonSmlBuildSettings ++ ossPublishSettings ++ Seq(
-  organization := "com.softwaremill.macwire",
-  ideSkipProject := (scalaVersion.value != ideScalaVersion) || thisProjectRef.value.project.contains("JS"),
-  bspEnabled := !ideSkipProject.value,
-  scalacOptions ~= (_.filterNot(Set("-Wconf:cat=other-match-analysis:error"))) // doesn't play well with macros
-)
+commonSmlBuildSettings
+ossPublishSettings
+
+organization := "com.softwaremill.macwire"
+ideSkipProject := (scalaVersion.value != ideScalaVersion) || thisProjectRef.value.project.contains("JS")
+bspEnabled := !ideSkipProject.value
+scalacOptions ~= (_.filterNot(Set("-Wconf:cat=other-match-analysis:error"))) // doesn't play well with macros
 
-val testSettings = commonSettings ++ Seq(
+val testSettings = Seq(
   publishArtifact := false,
   scalacOptions ++= Seq("-Ywarn-dead-code"),
   // Otherwise when running tests in sbt, the macro is not visible
   // (both macro and usages are compiled in the same compiler run)
-  Test / fork := true
+  Test / fork := true,
+  exportJars := false,
+  // in sbt 2 forked tests are run by a worker, so java.class.path doesn't contain the test classpath needed by the Scala 3 compile tests
+  Test / javaOptions += {
+    val converter = fileConverter.value
+    val classpath = (Test / fullClasspath).value.map(a => converter.toPath(a.data).toString)
+    s"-Dmacwire.test.classpath=${classpath.mkString(java.io.File.pathSeparator)}"
+  }
 )
 
-val tagging = "com.softwaremill.common" %% "tagging" % "2.3.5"
+val tagging = ("com.softwaremill.common" %% "tagging" % "2.3.5").platform(Platform.jvm)
 val scalatest = "org.scalatest" %% "scalatest" % "3.2.20"
 val javassist = "org.javassist" % "javassist" % "3.33.0-GA"
-val akkaActor = "com.typesafe.akka" %% "akka-actor" % "2.6.21"
-val pekkoActor = "org.apache.pekko" %% "pekko-actor" % "1.7.0"
+val akkaActor = ("com.typesafe.akka" %% "akka-actor" % "2.6.21").platform(Platform.jvm)
+val pekkoActor = ("org.apache.pekko" %% "pekko-actor" % "1.7.0").platform(Platform.jvm)
 val javaxInject = "javax.inject" % "javax.inject" % "1"
-val cats = "org.typelevel" %% "cats-core" % "2.13.0"
-val catsEffect = "org.typelevel" %% "cats-effect" % "3.7.1"
+val cats = ("org.typelevel" %% "cats-core" % "2.13.0").platform(Platform.jvm)
+val catsEffect = ("org.typelevel" %% "cats-effect" % "3.7.1").platform(Platform.jvm)
 
-lazy val root = project
-  .in(file("."))
-  .settings(commonSettings)
+lazy val root = rootProject
   .settings(name := "macwire", publishArtifact := false)
-  .aggregate(
-    List(
-      util,
-      macros,
-      proxy,
-      tests,
-      tests2,
-      testUtil,
-      utilTests,
-      macrosAkka,
-      macrosPekko,
-      macrosAkkaTests,
-      macrosPekkoTests,
-      macrosAutoCats,
-      macrosAutoCatsTests
-    ).flatMap(_.projectRefs): _*
-  )
+  .autoAggregate
 
 lazy val util = projectMatrix
   .in(file("util"))
   .settings(libraryDependencies += tagging)
-  .settings(commonSettings)
   .jvmPlatform(scalaVersions = scala2And3Versions)
   .jsPlatform(scalaVersions = scala2And3Versions)
   .nativePlatform(scalaVersions = scala2And3Versions)
 
 lazy val macros = projectMatrix
   .in(file("macros"))
-  .settings(commonSettings)
   .settings(
     libraryDependencies ++= reflectLibrary(scalaVersion.value),
     versionSpecificScalaSources
@@ -117,7 +105,6 @@ lazy val macros = projectMatrix
 
 lazy val proxy = projectMatrix
   .in(file("proxy"))
-  .settings(commonSettings)
   .settings(
     libraryDependencies ++= Seq(javassist, scalatest % Test),
     compileOrder := CompileOrder.JavaThenScala,
@@ -162,7 +149,6 @@ lazy val tests2 = projectMatrix
 
 lazy val macrosAkka = projectMatrix
   .in(file("macrosAkka"))
-  .settings(commonSettings)
   .settings(libraryDependencies ++= Seq(akkaActor % "provided"))
   .dependsOn(macros)
   .jvmPlatform(scalaVersions = scala2)
@@ -170,7 +156,6 @@ lazy val macrosAkka = projectMatrix
 
 lazy val macrosPekko = projectMatrix
   .in(file("macrosPekko"))
-  .settings(commonSettings)
   .settings(libraryDependencies ++= Seq(pekkoActor % "provided"))
   .dependsOn(macros)
   .jvmPlatform(scalaVersions = scala2)
@@ -204,7 +189,6 @@ lazy val macrosPekkoTests = projectMatrix
 
 lazy val macrosAutoCats = projectMatrix
   .in(file("macrosAutoCats"))
-  .settings(commonSettings)
   .settings(libraryDependencies ++= Seq(catsEffect, cats))
   .dependsOn(macros)
   .jvmPlatform(scalaVersions = scala2)
diff --git a/project/build.properties b/project/build.properties
index e0a1aa02..ddca111e 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.13.0
+sbt.version=2.0.9
diff --git a/project/plugins.sbt b/project/plugins.sbt
index f5229c8a..4f0ae563 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,6 +1,4 @@
-addSbtPlugin("com.eed3si9n" % "sbt-projectmatrix" % "0.11.0")
-
-val sbtSoftwareMillVersion = "2.1.2"
+val sbtSoftwareMillVersion = "3.0.1"
 addSbtPlugin("com.softwaremill.sbt-softwaremill" % "sbt-softwaremill-common" % sbtSoftwareMillVersion)
 addSbtPlugin("com.softwaremill.sbt-softwaremill" % "sbt-softwaremill-publish" % sbtSoftwareMillVersion)
 
diff --git a/test-util/src/main/scala-3/com/softwaremill/macwire/Properties.scala b/test-util/src/main/scala-3/com/softwaremill/macwire/Properties.scala
index e1bf3d55..5dd10871 100644
--- a/test-util/src/main/scala-3/com/softwaremill/macwire/Properties.scala
+++ b/test-util/src/main/scala-3/com/softwaremill/macwire/Properties.scala
@@ -3,5 +3,5 @@ package com.softwaremill.macwire
 import java.io.File
 
 object Properties {
-  def currentClasspath = sys.props("java.class.path")
+  def currentClasspath = sys.props.getOrElse("macwire.test.classpath", sys.props("java.class.path"))
 }