diff --git a/.github/workflows/scala.yml b/.github/workflows/scala.yml
index 681468660..a2f1d12cf 100644
--- a/.github/workflows/scala.yml
+++ b/.github/workflows/scala.yml
@@ -20,3 +20,5 @@ jobs:
         distribution: 'adopt'
     - name: Run tests
       run: sbt test
+    - name: Compile benchmarks
+      run: sbt 'benchmark / compile'
diff --git a/macros/build.sbt b/macros/build.sbt
index 845443c3d..9318f97dc 100644
--- a/macros/build.sbt
+++ b/macros/build.sbt
@@ -14,12 +14,13 @@ libraryDependencies ++= {
         "org.scala-lang" % "scala-reflect" % s"${scalaVersion.value}",
         "org.typelevel" %% "spire" % "0.18.0"
       )
-    case Some((3, _)) => Seq(
-    )
+    case Some((3, _)) =>
+      Seq(
+        )
     case _ => ???
   }
 }
-unmanagedSourceDirectories in Compile += {
+Compile / unmanagedSourceDirectories += {
   CrossVersion.partialVersion(scalaVersion.value) match {
     case Some((2, _)) => baseDirectory.value / "src" / "main" / "scala_2"
     case Some((3, _)) => baseDirectory.value / "src" / "main" / "scala_3"
@@ -27,7 +28,7 @@ unmanagedSourceDirectories in Compile += {
   }
 }
 
-unmanagedSourceDirectories in Test += {
+Test / unmanagedSourceDirectories += {
   CrossVersion.partialVersion(scalaVersion.value) match {
     case Some((2, _)) => baseDirectory.value / "src" / "test" / "scala_2"
     case Some((3, _)) => baseDirectory.value / "src" / "test" / "scala_3"
diff --git a/math/build.sbt b/math/build.sbt
index 07fd09be7..793fa0f7a 100644
--- a/math/build.sbt
+++ b/math/build.sbt
@@ -29,7 +29,7 @@ libraryDependencies += {
 }
 
 // see https://github.com/typesafehub/scalalogging/issues/23
-testOptions in Test += Tests.Setup(classLoader =>
+Test / testOptions += Tests.Setup(classLoader =>
   try {
     classLoader
       .loadClass("org.slf4j.LoggerFactory")
@@ -39,9 +39,6 @@ testOptions in Test += Tests.Setup(classLoader =>
     case _: Exception =>
 })
 
-fork in Test := true
+Test / fork := true
 
 javaOptions := Seq("-Xmx4g", "-Xss10m")
-
-
-
diff --git a/project/Build.scala b/project/Build.scala
index 45181c2a7..4e9aad5ac 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -31,7 +31,7 @@ object Common {
       Resolver.sonatypeRepo("releases"),
       Resolver.typesafeRepo("releases")
     ),
-    testOptions in Test += Tests.Argument("-oDF"),
+    Test / testOptions += Tests.Argument("-oDF"),
 
     // test dependencies
     libraryDependencies ++= Seq(
@@ -63,7 +63,7 @@ object Common {
     },
 
     // stuff related to publishing
-    publishArtifact in Test := false,
+    Test / publishArtifact := false,
     pomIncludeRepository := { _ =>
       false
     },
@@ -73,7 +73,7 @@ object Common {
     publishTo := sonatypePublishTo.value,
     sonatypeProjectHosting := Some(GitHubHosting("scalanlp", "breeze", "David Hall", "david.lw.hall@gmail.com")),
 
-    unmanagedSourceDirectories in Compile ++= {
+    Compile / unmanagedSourceDirectories ++= {
       CrossVersion.partialVersion(scalaVersion.value) match {
         case Some((2, 11|12)) => Seq(
           baseDirectory.value / "src" / "main" / "scala_2.11_2.12",
diff --git a/version.sbt b/version.sbt
index 7913c6026..096edd471 100644
--- a/version.sbt
+++ b/version.sbt
@@ -6,7 +6,7 @@ git.baseVersion := "2.1.0"
 
 val VersionRegex = "v([0-9]+.[0-9]+.[0-9]+)-?(.*)?".r
 
-version in ThisBuild := "2.1.0"
+ThisBuild / version := "2.1.0"
 
 /*
 git.gitTagToVersionNumber := {