diff --git a/src/main/scala-2.12/PluginCompat.scala b/src/main/scala-2.12/PluginCompat.scala
index f577c55f..d4476cce 100644
--- a/src/main/scala-2.12/PluginCompat.scala
+++ b/src/main/scala-2.12/PluginCompat.scala
@@ -10,6 +10,7 @@ import sbt.util.Tracked.{ inputChanged, lastOutput }
 import xsbti.FileConverter
 
 private[sbtassembly] object PluginCompat {
+  type Out = java.io.File
   type MainClass = sbt.Package.MainClass
 
   object CollectionConverters
@@ -21,6 +22,8 @@ private[sbtassembly] object PluginCompat {
     a.data.toPath()
   def toFile(a: Attributed[File])(implicit conv: FileConverter): File =
     a.data
+  def toOutput(x: File)(implicit conv: FileConverter): File =
+    x
   def toNioPaths(cp: Seq[Attributed[File]])(implicit conv: FileConverter): Vector[NioPath] =
     cp.map(_.data.toPath()).toVector
   def toFiles(cp: Seq[Attributed[File]])(implicit conv: FileConverter): Vector[File] =
diff --git a/src/main/scala-3/PluginCompat.scala b/src/main/scala-3/PluginCompat.scala
index b229bfb1..8027bc65 100644
--- a/src/main/scala-3/PluginCompat.scala
+++ b/src/main/scala-3/PluginCompat.scala
@@ -8,6 +8,7 @@ import sbt.librarymanagement.ModuleID
 import xsbti.{ FileConverter, HashedVirtualFileRef }
 
 object PluginCompat:
+  type Out = HashedVirtualFileRef
   type JarManifest = PackageOption.JarManifest
   type MainClass = PackageOption.MainClass
   type ManifestAttributes = PackageOption.ManifestAttributes
@@ -23,6 +24,8 @@ object PluginCompat:
     conv.toPath(a.data)
   inline def toFile(a: Attributed[HashedVirtualFileRef])(implicit conv: FileConverter): File =
     toNioPath(a).toFile()
+  def toOutput(x: File)(implicit conv: FileConverter): HashedVirtualFileRef =
+    conv.toVirtualFile(x.toPath())
   def toNioPaths(cp: Seq[Attributed[HashedVirtualFileRef]])(implicit conv: FileConverter): Vector[NioPath] =
     cp.map(toNioPath).toVector
   inline def toFiles(cp: Seq[Attributed[HashedVirtualFileRef]])(implicit conv: FileConverter): Vector[File] =
@@ -56,7 +59,7 @@ object PluginCompat:
   ): CacheKey = 0
 
   private[sbtassembly] def cachedAssembly(inputs: CacheKey, cacheDir: File, scalaVersion: String, log: Logger)(
-      buildAssembly: () => File
-  ): File =
+      buildAssembly: () => PluginCompat.Out
+  ): PluginCompat.Out =
     buildAssembly()
 end PluginCompat
diff --git a/src/main/scala/sbtassembly/Assembly.scala b/src/main/scala/sbtassembly/Assembly.scala
index 721c366c..a92820f9 100644
--- a/src/main/scala/sbtassembly/Assembly.scala
+++ b/src/main/scala/sbtassembly/Assembly.scala
@@ -170,7 +170,7 @@ object Assembly {
     val jarName: String = s"$name${if (version.nonEmpty) "-" else ""}$version.jar"
   }
 
-  def assemblyTask(key: TaskKey[File]): Initialize[Task[File]] = Def.task {
+  def assemblyTask(key: TaskKey[PluginCompat.Out]): Initialize[Task[PluginCompat.Out]] = Def.task {
     val t = (key / test).value
     val s = (key / streams).value
     val conv = fileConverter.value
@@ -212,7 +212,7 @@ object Assembly {
       conv: FileConverter,
       cacheDir: File,
       log: Logger
-  ): File = {
+  ): PluginCompat.Out = {
     def timed[A](level: Level.Value, desc: String)(f: => A): A = {
       log.log(level, desc + " start:")
       val start = Instant.now().toEpochMilli
@@ -322,7 +322,7 @@ object Assembly {
         if (mergeStrategy.name == MergeStrategy.rename.name) Option.empty
         else Option(mergeStrategy)
       }
-      val buildAssembly = () => {
+      val buildAssembly: () => PluginCompat.Out  = () => {
         val mergedEntries = timed(Level.Debug, "Merge all conflicting jar entries (including those renamed)") {
           merge(renamedDependencies ++ others, secondPassMergeStrategy, log)
         }
@@ -391,7 +391,7 @@ object Assembly {
           }
         log.info("Built: " + builtAssemblyJar.toPath)
         log.info("Jar hash: " + fullSha1)
-        builtAssemblyJar
+        toOutput(builtAssemblyJar)
       }
       val mergeStrategiesByPathList = timed(Level.Debug, "Collect all merge strategies for cache check") {
         // collect all
diff --git a/src/main/scala/sbtassembly/AssemblyKeys.scala b/src/main/scala/sbtassembly/AssemblyKeys.scala
index ca8f49d3..33969153 100644
--- a/src/main/scala/sbtassembly/AssemblyKeys.scala
+++ b/src/main/scala/sbtassembly/AssemblyKeys.scala
@@ -1,15 +1,15 @@
 package sbtassembly
 
 import com.eed3si9n.jarjarabrams
-import sbt.Keys._
-import sbt._
+import sbt.Keys.*
+import sbt.*
 
 trait AssemblyKeys {
-  lazy val assembly                  = taskKey[File]("Builds a deployable über JAR")
+  lazy val assembly                  = taskKey[PluginCompat.Out]("Builds a deployable über JAR")
   lazy val assembleArtifact          = settingKey[Boolean]("Enables (true) or disables (false) assembling an artifact")
   lazy val assemblyOption            = taskKey[AssemblyOption]("Configuration for making a deployable über JAR")
-  lazy val assemblyPackageScala      = taskKey[File]("Produces the Scala artifact")
-  lazy val assemblyPackageDependency = taskKey[File]("Produces the dependency artifact")
+  lazy val assemblyPackageScala      = taskKey[PluginCompat.Out]("Produces the Scala artifact")
+  lazy val assemblyPackageDependency = taskKey[PluginCompat.Out]("Produces the dependency artifact")
   lazy val assemblyJarName           = taskKey[String]("name of the über jar")
   lazy val assemblyDefaultJarName    = taskKey[String]("default name of the über jar")
   lazy val assemblyOutputPath        = taskKey[File]("output path of the über jar")
diff --git a/src/main/scala/sbtassembly/AssemblyPlugin.scala b/src/main/scala/sbtassembly/AssemblyPlugin.scala
index 01fa4af1..7abacc5d 100644
--- a/src/main/scala/sbtassembly/AssemblyPlugin.scala
+++ b/src/main/scala/sbtassembly/AssemblyPlugin.scala
@@ -108,6 +108,10 @@ object AssemblyPlugin extends sbt.AutoPlugin {
   def assemblyOptionSettings: Seq[Setting[_]] = Seq(
     assemblyOption := {
       val s = streams.value
+      val sr = assemblyShadeRules.value
+      if (sr.nonEmpty && exportJars.value) {
+        sys.error("exportJars must be set to false for the shading to work")
+      }
       AssemblyOption()
         .withIncludeBin((packageBin / assembleArtifact).value)
         .withIncludeScala((assemblyPackageScala / assembleArtifact).value)
@@ -118,7 +122,7 @@ object AssemblyPlugin extends sbt.AutoPlugin {
         .withAppendContentHash(assemblyAppendContentHash.value)
         .withPrependShellScript(assemblyPrependShellScript.value)
         .withMaxHashLength(assemblyMaxHashLength.?.value)
-        .withShadeRules(assemblyShadeRules.value)
+        .withShadeRules(sr)
         .withScalaVersion(scalaVersion.value)
         .withLevel(logLevel.?.value.getOrElse(Level.Info))
         .withRepeatableBuild(assemblyRepeatableBuild.value)
diff --git a/src/sbt-test/merging/merging/build.sbt b/src/sbt-test/merging/merging/build.sbt
index 28ec67b2..157e9423 100644
--- a/src/sbt-test/merging/merging/build.sbt
+++ b/src/sbt-test/merging/merging/build.sbt
@@ -1,6 +1,6 @@
-ThisBuild / version := "0.1"
-ThisBuild / scalaVersion := "2.12.18"
-ThisBuild / assemblyMergeStrategy := {
+version := "0.1"
+scalaVersion := "2.12.18"
+assemblyMergeStrategy := {
   case "a" => MergeStrategy.concat
   case "b" => MergeStrategy.first
   case "c" => MergeStrategy.last
@@ -9,9 +9,11 @@ ThisBuild / assemblyMergeStrategy := {
   case "f" => MergeStrategy.discard
   case PathList("x", "y") => MergeStrategy.discard
   case x   =>
-    val oldStrategy = (ThisBuild / assemblyMergeStrategy).value
+    val oldStrategy = assemblyMergeStrategy.value
     oldStrategy(x)
 }
+name := "foo"
+exportJars := true
 
 lazy val testmerge = (project in file("."))
   .settings(
@@ -25,9 +27,9 @@ lazy val testmerge = (project in file("."))
         mustContain(dir / "d", Seq("1", "2", "3"))
         mustContain(dir / "e", Seq("1"))
         mustNotExist(dir / "f")
-        mustContain(dir / "README_foo", Seq("resources"))
+        mustContain(dir / "README_foo-0.1", Seq("resources"))
         mustContain(dir / "README_1", Seq("1"))
-        mustContain(dir / "LICENSE_foo", Seq("resources"))
+        mustContain(dir / "LICENSE_foo-0.1", Seq("resources"))
         mustContain(dir / "LICENSE" / "a", Seq("1"))
         // 80f5a06 -- don't rename License.class
         mustExist(dir / "com" / "example" / "License.class")
diff --git a/src/sbt-test/merging/merging/test b/src/sbt-test/merging/merging/test
index 8f0400c8..b7a2eeb6 100644
--- a/src/sbt-test/merging/merging/test
+++ b/src/sbt-test/merging/merging/test
@@ -1,4 +1,5 @@
 # check if the file gets created
+> debug
 > assembly
 
 # check if it says hello
diff --git a/src/sbt-test/shading/directories/build.sbt b/src/sbt-test/shading/directories/build.sbt
index 69bbc176..bb2b8d99 100644
--- a/src/sbt-test/shading/directories/build.sbt
+++ b/src/sbt-test/shading/directories/build.sbt
@@ -1,8 +1,8 @@
-ThisBuild / scalaVersion := "2.12.18"
-
-ThisBuild / assemblyShadeRules := Seq(
+scalaVersion := "2.12.18"
+assemblyShadeRules := Seq(
   ShadeRule.rename("somepackage.**" -> "shaded.@1").inAll
 )
+exportJars := false
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/src/sbt-test/shading/jdk11/build.sbt b/src/sbt-test/shading/jdk11/build.sbt
index 8ceeb03c..8734d587 100644
--- a/src/sbt-test/shading/jdk11/build.sbt
+++ b/src/sbt-test/shading/jdk11/build.sbt
@@ -1,3 +1,4 @@
+exportJars := false
 scalaVersion := scala212
 
 lazy val scala212 = "2.12.18"
diff --git a/src/sbt-test/shading/jdk17/build.sbt b/src/sbt-test/shading/jdk17/build.sbt
index c9d696c4..118f0a5c 100644
--- a/src/sbt-test/shading/jdk17/build.sbt
+++ b/src/sbt-test/shading/jdk17/build.sbt
@@ -1,3 +1,4 @@
+exportJars := false
 scalaVersion := "2.13.12"
 
 assembly / assemblyShadeRules := Seq(
diff --git a/src/sbt-test/shading/keeponly/build.sbt b/src/sbt-test/shading/keeponly/build.sbt
index 9b727ad6..a64b7143 100644
--- a/src/sbt-test/shading/keeponly/build.sbt
+++ b/src/sbt-test/shading/keeponly/build.sbt
@@ -1,3 +1,4 @@
+exportJars := false
 lazy val scala212 = "2.12.18"
 lazy val scala213 = "2.13.11"
 
@@ -16,7 +17,7 @@ lazy val testkeep = (project in file(".")).
         IO.unzip(crossTarget.value / "foo.jar", dir)
         mustNotExist(dir / "removed" / "ShadeClass.class")
         mustNotExist(dir / "removed" / "ShadePackage.class")
-        mustExist(dir / "keep" / "Keeped.class")
+        mustExist(dir / "keep" / "Kept.class")
       }
     })
 
diff --git a/src/sbt-test/shading/keeponly/src/main/scala/keep/Keeped.scala b/src/sbt-test/shading/keeponly/src/main/scala/keep/Kept.scala
similarity index 53%
rename from src/sbt-test/shading/keeponly/src/main/scala/keep/Keeped.scala
rename to src/sbt-test/shading/keeponly/src/main/scala/keep/Kept.scala
index 789b5f46..ee7c53ea 100644
--- a/src/sbt-test/shading/keeponly/src/main/scala/keep/Keeped.scala
+++ b/src/sbt-test/shading/keeponly/src/main/scala/keep/Kept.scala
@@ -1,3 +1,3 @@
 package keep
 
-class Keeped
\ No newline at end of file
+class Kept
\ No newline at end of file
diff --git a/src/sbt-test/shading/scalasigannot/build.sbt b/src/sbt-test/shading/scalasigannot/build.sbt
index ddb335a7..a6444ba6 100644
--- a/src/sbt-test/shading/scalasigannot/build.sbt
+++ b/src/sbt-test/shading/scalasigannot/build.sbt
@@ -9,6 +9,7 @@ ThisBuild / crossScalaVersions := List(scala212, scala213)
 
 
 val shadingSettings: Seq[Def.Setting[_]] = Seq(
+  exportJars := false,
   assembly / assemblyShadeRules := Seq(
     ShadeRule.rename(
       "to.be.shaded.**" -> "shade.@1"
@@ -18,7 +19,7 @@ val shadingSettings: Seq[Def.Setting[_]] = Seq(
   assembly / assemblyExcludedJars := {
     val cp = (assembly / fullClasspath).value
     cp.filterNot {p =>
-      p.data.getName.startsWith("tobeshaded")
+      p.data.toString.contains("tobeshaded")
     }
   },
 
@@ -39,10 +40,10 @@ lazy val fatLib = project.in(file("fatlib"))
     Seq(
       name := "fatlib",
       (Compile / unmanagedJars) := {
-        val tbs: File = (toBeShaded / Compile / packageBin).value
+        val tbs = (toBeShaded / Compile / packageBin).value
         //Seq(sbt.internal.util.Attributed.blank[java.io.File](tbs))
 
-        Seq(Attributed.blank[java.io.File](tbs))
+        Seq(Attributed.blank(tbs))
       }
     )
   )
@@ -62,8 +63,9 @@ lazy val root = project.in(file("."))
         //Seq(sbt.internal.util.Attributed.blank[java.io.File](tbs))
 
         val x = (fatLib / Compile / assembly).value
-        Seq(Attributed.blank[java.io.File](x))
-      }
+        Seq(Attributed.blank(x))
+      },
+      fgRun / aggregate := false,
     )
   )
   .aggregate(fatLib, toBeShaded)
\ No newline at end of file
diff --git a/src/sbt-test/shading/scalasigannot/project/plugins.sbt b/src/sbt-test/shading/scalasigannot/project/plugins.sbt
index 25c3fb81..b7bb6c0d 100644
--- a/src/sbt-test/shading/scalasigannot/project/plugins.sbt
+++ b/src/sbt-test/shading/scalasigannot/project/plugins.sbt
@@ -3,5 +3,5 @@
   if(pluginVersion == null)
     throw new RuntimeException("""|The system property 'plugin.version' is not defined.
                                  |Specify this property using the scriptedLaunchOpts -D.""".stripMargin)
-  else addSbtPlugin("com.eed3si9n" % "sbt-assembly" % pluginVersion changing())
+  else addSbtPlugin("com.eed3si9n" % "sbt-assembly" % pluginVersion)
 }
diff --git a/src/sbt-test/shading/scalasigannot/test b/src/sbt-test/shading/scalasigannot/test
index 06b8f1c0..7999a1f1 100644
--- a/src/sbt-test/shading/scalasigannot/test
+++ b/src/sbt-test/shading/scalasigannot/test
@@ -1,3 +1,3 @@
 # Run the main project
 
-> +root/run
+> +root/fgRun
diff --git a/src/sbt-test/shading/shading/build.sbt b/src/sbt-test/shading/shading/build.sbt
index d6038ad6..e9a54fb3 100644
--- a/src/sbt-test/shading/shading/build.sbt
+++ b/src/sbt-test/shading/shading/build.sbt
@@ -1,3 +1,5 @@
+exportJars := false
+
 lazy val testshade = (project in file(".")).
   settings(
     version := "0.1",
diff --git a/src/sbt-test/shading/unmanagedjars/build.sbt b/src/sbt-test/shading/unmanagedjars/build.sbt
index 59b3d811..5b5f237a 100644
--- a/src/sbt-test/shading/unmanagedjars/build.sbt
+++ b/src/sbt-test/shading/unmanagedjars/build.sbt
@@ -1,3 +1,5 @@
+exportJars := false
+
 lazy val testshade = (project in file(".")).
   settings(
     version := "0.1",