diff --git a/src/sbt-test/merging/mergefail/build.sbt b/src/sbt-test/merging/mergefail/build.sbt
index 04c72d05..b34f2823 100644
--- a/src/sbt-test/merging/mergefail/build.sbt
+++ b/src/sbt-test/merging/mergefail/build.sbt
@@ -1,9 +1,9 @@
 lazy val testmerge = (project in file(".")).
   settings(
     version := "0.1",
-    assemblyJarName in assembly := "foo.jar",
-    assemblyMergeStrategy in assembly := {
-      val old = (assemblyMergeStrategy in assembly).value
+    assembly / assemblyJarName := "foo.jar",
+    assembly / assemblyMergeStrategy := {
+      val old = (assembly / assemblyMergeStrategy).value
 
       {
         case _ => MergeStrategy.singleOrError
diff --git a/src/sbt-test/merging/mergefail2/build.sbt b/src/sbt-test/merging/mergefail2/build.sbt
index 013a9161..c88fd707 100644
--- a/src/sbt-test/merging/mergefail2/build.sbt
+++ b/src/sbt-test/merging/mergefail2/build.sbt
@@ -1,5 +1,5 @@
 lazy val testmerge = (project in file(".")).
   settings(
     version := "0.1",
-    assemblyJarName in assembly := "foo.jar"
+    assembly / assemblyJarName := "foo.jar"
   )
diff --git a/src/sbt-test/merging/merging/build.sbt b/src/sbt-test/merging/merging/build.sbt
index 2fd159eb..78a18fec 100644
--- a/src/sbt-test/merging/merging/build.sbt
+++ b/src/sbt-test/merging/merging/build.sbt
@@ -1,6 +1,6 @@
-version in ThisBuild := "0.1"
-scalaVersion in ThisBuild := "2.12.15"
-assemblyMergeStrategy in ThisBuild := {
+ThisBuild / version := "0.1"
+ThisBuild / scalaVersion := "2.12.15"
+ThisBuild / assemblyMergeStrategy := {
   case "a" => MergeStrategy.concat
   case "b" => MergeStrategy.first
   case "c" => MergeStrategy.last
@@ -9,13 +9,13 @@ assemblyMergeStrategy in ThisBuild := {
   case "f" => MergeStrategy.discard
   case PathList("x", "y") => MergeStrategy.discard
   case x   =>
-    val oldStrategy = (assemblyMergeStrategy in ThisBuild).value
+    val oldStrategy = (ThisBuild / assemblyMergeStrategy).value
     oldStrategy(x)
 }
 
 lazy val testmerge = (project in file("."))
   .settings(
-    assemblyJarName in assembly := "foo.jar",
+    assembly / assemblyJarName := "foo.jar",
     TaskKey[Unit]("check") := {
       IO.withTemporaryDirectory { dir ⇒
         IO.unzip(crossTarget.value / "foo.jar", dir)
diff --git a/src/sbt-test/sbt-assembly/appendhash/build.sbt b/src/sbt-test/sbt-assembly/appendhash/build.sbt
index 79cffe0a..024382d1 100644
--- a/src/sbt-test/sbt-assembly/appendhash/build.sbt
+++ b/src/sbt-test/sbt-assembly/appendhash/build.sbt
@@ -1,6 +1,6 @@
-version in ThisBuild := "0.1"
-scalaVersion in ThisBuild := "2.12.8"
-assemblyAppendContentHash in ThisBuild := true
+ThisBuild / version := "0.1"
+ThisBuild / scalaVersion := "2.12.8"
+ThisBuild / assemblyAppendContentHash := true
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/src/sbt-test/sbt-assembly/appendhash/test b/src/sbt-test/sbt-assembly/appendhash/test
index beefe0a1..255c91d9 100644
--- a/src/sbt-test/sbt-assembly/appendhash/test
+++ b/src/sbt-test/sbt-assembly/appendhash/test
@@ -10,7 +10,7 @@
 > assemblyPackageDependency
 > checkFile "foo-assembly-0.1-deps-[0-9abcdef]{40}.jar"
 
-> set assemblyMaxHashLength in ThisBuild := 5
+> set ThisBuild / assemblyMaxHashLength := 5
 > clean
 > assembly
 > checkFile "foo-assembly-0.1-[0-9abcdef]{5}.jar"
diff --git a/src/sbt-test/sbt-assembly/config/build.sbt b/src/sbt-test/sbt-assembly/config/build.sbt
index 9138807a..679ef140 100644
--- a/src/sbt-test/sbt-assembly/config/build.sbt
+++ b/src/sbt-test/sbt-assembly/config/build.sbt
@@ -1,5 +1,5 @@
-version in ThisBuild := "0.1"
-scalaVersion in ThisBuild := "2.12.15"
+ThisBuild / version := "0.1"
+ThisBuild / scalaVersion := "2.12.15"
 
 lazy val root = (project in file("."))
   .settings(inConfig(Test)(baseAssemblySettings))
diff --git a/src/sbt-test/sbt-assembly/deps/build.sbt b/src/sbt-test/sbt-assembly/deps/build.sbt
index 0aa418ec..862b8986 100644
--- a/src/sbt-test/sbt-assembly/deps/build.sbt
+++ b/src/sbt-test/sbt-assembly/deps/build.sbt
@@ -1,5 +1,5 @@
-version in ThisBuild := "0.1"
-scalaVersion in ThisBuild := "2.12.15"
+ThisBuild / version := "0.1"
+ThisBuild / scalaVersion := "2.12.15"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/src/sbt-test/sbt-assembly/empty/build.sbt b/src/sbt-test/sbt-assembly/empty/build.sbt
index 612483ca..b64a65ca 100644
--- a/src/sbt-test/sbt-assembly/empty/build.sbt
+++ b/src/sbt-test/sbt-assembly/empty/build.sbt
@@ -1,2 +1,2 @@
-version in ThisBuild := "0.1"
-scalaVersion in ThisBuild := "2.12.8"
+ThisBuild / version := "0.1"
+ThisBuild / scalaVersion := "2.12.8"
diff --git a/src/sbt-test/sbt-assembly/piecemeal/build.sbt b/src/sbt-test/sbt-assembly/piecemeal/build.sbt
index e1635047..65eb30ba 100644
--- a/src/sbt-test/sbt-assembly/piecemeal/build.sbt
+++ b/src/sbt-test/sbt-assembly/piecemeal/build.sbt
@@ -1,8 +1,8 @@
-version in ThisBuild := "0.1"
-scalaVersion in ThisBuild := "2.12.15"
+ThisBuild / version := "0.1"
+ThisBuild / scalaVersion := "2.12.15"
 
-assembleArtifact in (ThisBuild, assemblyPackageScala) := false
-assembleArtifact in (ThisBuild, assemblyPackageDependency) := false
+ThisBuild / assemblyPackageScala / assembleArtifact := false
+ThisBuild / assemblyPackageDependency / assembleArtifact := false
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/src/sbt-test/sbt-assembly/simple/build.sbt b/src/sbt-test/sbt-assembly/simple/build.sbt
index b4edac62..4ca78ef8 100644
--- a/src/sbt-test/sbt-assembly/simple/build.sbt
+++ b/src/sbt-test/sbt-assembly/simple/build.sbt
@@ -1,5 +1,5 @@
-version in ThisBuild := "0.1"
-scalaVersion in ThisBuild := "2.12.8"
+ThisBuild / version := "0.1"
+ThisBuild / scalaVersion := "2.12.8"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/src/sbt-test/shading/directories/build.sbt b/src/sbt-test/shading/directories/build.sbt
index a2e5ac9b..877b61a8 100644
--- a/src/sbt-test/shading/directories/build.sbt
+++ b/src/sbt-test/shading/directories/build.sbt
@@ -1,6 +1,6 @@
-scalaVersion in ThisBuild := "2.12.15"
+ThisBuild / scalaVersion := "2.12.15"
 
-assemblyShadeRules in ThisBuild := Seq(
+ThisBuild / assemblyShadeRules := Seq(
   ShadeRule.rename("somepackage.**" -> "shaded.@1").inAll
 )
 
diff --git a/src/sbt-test/shading/scalasigannot/build.sbt b/src/sbt-test/shading/scalasigannot/build.sbt
index d6333595..91f9a7a1 100644
--- a/src/sbt-test/shading/scalasigannot/build.sbt
+++ b/src/sbt-test/shading/scalasigannot/build.sbt
@@ -1,31 +1,31 @@
-version in ThisBuild := "1.0-SNAPSHOT"
-organization in ThisBuild := "scalasigannottest"
-scalaVersion in ThisBuild := scala213
+ThisBuild / version := "1.0-SNAPSHOT"
+ThisBuild / organization := "scalasigannottest"
+ThisBuild / scalaVersion := scala213
 
 lazy val scala212 = "2.12.15"
 lazy val scala213 = "2.13.7"
 
-crossScalaVersions in ThisBuild := List(scala212, scala213)
+ThisBuild / crossScalaVersions := List(scala212, scala213)
 
 
 val shadingSettings: Seq[Def.Setting[_]] = Seq(
-  assemblyShadeRules in assembly := Seq(
+  assembly / assemblyShadeRules := Seq(
     ShadeRule.rename(
       "to.be.shaded.**" -> "shade.@1"
     ).inAll
   ),
-  assemblyOption in assembly ~= { _.withIncludeScala(false) },
-  assemblyExcludedJars in assembly := {
-    val cp = (fullClasspath in assembly).value
+  assembly / assemblyOption ~= { _.withIncludeScala(false) },
+  assembly / assemblyExcludedJars := {
+    val cp = (assembly / fullClasspath).value
     cp.filterNot {p =>
       p.data.getName.startsWith("tobeshaded")
     }
   },
 
-  artifactClassifier in (sbt.Test, packageBin) := None,
-  artifact in (Compile, assembly) := (artifact in (Compile, assembly)).value.withClassifier(Some("shaded"))
+  sbt.Test / packageBin / artifactClassifier := None,
+  Compile / assembly / artifact := (Compile / assembly / artifact).value.withClassifier(Some("shaded"))
 
-) ++ addArtifact(artifact in (Compile, assembly), assembly).settings
+) ++ addArtifact(Compile / assembly / artifact, assembly).settings
 
 // A jar to be shaded in shadedLib
 lazy val toBeShaded = project.in(file("tobeshaded"))
@@ -38,8 +38,8 @@ lazy val fatLib = project.in(file("fatlib"))
   .settings(
     Seq(
       name := "fatlib",
-      (unmanagedJars in Compile) := {
-        val tbs: File = ((packageBin in Compile) in toBeShaded).value
+      (Compile / unmanagedJars) := {
+        val tbs: File = (toBeShaded / Compile / packageBin).value
         //Seq(sbt.internal.util.Attributed.blank[java.io.File](tbs))
 
         Seq(Attributed.blank[java.io.File](tbs))
@@ -61,7 +61,7 @@ lazy val root = project.in(file("."))
         //val tbs: File = ((packageBin in (Compile, assembly)) in fatLib).value
         //Seq(sbt.internal.util.Attributed.blank[java.io.File](tbs))
 
-        val x = (assembly in (fatLib, Compile)).value
+        val x = (fatLib / Compile / assembly).value
         Seq(Attributed.blank[java.io.File](x))
       }
     )