diff --git a/main/src/main/scala/sbt/internal/CompatParColls.scala b/main/src/main/scala/sbt/internal/CompatParColls.scala
deleted file mode 100644
index b79efc6d8..000000000
--- a/main/src/main/scala/sbt/internal/CompatParColls.scala
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * sbt
- * Copyright 2023, Scala center
- * Copyright 2011 - 2022, Lightbend, Inc.
- * Copyright 2008 - 2010, Mark Harrah
- * Licensed under Apache License 2.0 (see LICENSE)
- */
-
-package sbt.internal
-
-import scala.annotation.nowarn
-
-// https://github.com/scala/scala-parallel-collections/issues/22
-private[sbt] object CompatParColls {
-  @nowarn
-  val Converters = {
-    import Compat._
-    {
-      import scala.collection.parallel._
-      CollectionConverters
-    }
-  }
-  object Compat {
-    object CollectionConverters
-  }
-}
diff --git a/main/src/main/scala/sbt/internal/KeyIndex.scala b/main/src/main/scala/sbt/internal/KeyIndex.scala
index 5c098cfb9..eff64d8ab 100644
--- a/main/src/main/scala/sbt/internal/KeyIndex.scala
+++ b/main/src/main/scala/sbt/internal/KeyIndex.scala
@@ -24,7 +24,7 @@ object KeyIndex {
       projects: Map[URI, Set[String]],
       configurations: Map[String, Seq[Configuration]]
   ): ExtendableKeyIndex = {
-    import sbt.internal.CompatParColls.Converters._
+    import scala.collection.parallel.CollectionConverters.*
     known.par.foldLeft(base(projects, configurations)) { _ add _ }
   }
 
@@ -42,7 +42,7 @@ object KeyIndex {
      * This was a significant serial bottleneck during project loading that we can work around by
      * computing the aggregations in parallel and then bulk adding them to the index.
      */
-    import sbt.internal.CompatParColls.Converters._
+    import scala.collection.parallel.CollectionConverters.*
     val toAggregate = known.par.map {
       case key if validID(key.key.label) =>
         Aggregation.aggregate(key, ScopeMask(), extra, reverse = true)
diff --git a/main/src/main/scala/sbt/internal/server/Definition.scala b/main/src/main/scala/sbt/internal/server/Definition.scala
index 041b6dc47..195a62b83 100644
--- a/main/src/main/scala/sbt/internal/server/Definition.scala
+++ b/main/src/main/scala/sbt/internal/server/Definition.scala
@@ -279,7 +279,7 @@ private[sbt] object Definition {
         log.debug(s"symbol $sym")
         analyses
           .map { analyses =>
-            import sbt.internal.CompatParColls.Converters._
+            import scala.collection.parallel.CollectionConverters.*
             val locations = analyses.par.flatMap { analysis =>
               val selectPotentials = textProcessor.potentialClsOrTraitOrObj(sym)
               val classes =
diff --git a/main/src/main/scala/sbt/nio/Settings.scala b/main/src/main/scala/sbt/nio/Settings.scala
index e68ee9905..9dfc04af5 100644
--- a/main/src/main/scala/sbt/nio/Settings.scala
+++ b/main/src/main/scala/sbt/nio/Settings.scala
@@ -297,7 +297,7 @@ private[sbt] object Settings {
    *         input key.
    */
   private[sbt] def fileStamps(scopedKey: Def.ScopedKey[_]): Def.Setting[_] = {
-    import sbt.internal.CompatParColls.Converters._
+    import scala.collection.parallel.CollectionConverters.*
     val scope = scopedKey.scope
     addTaskDefinition(scope / Keys.inputFileStamps := {
       val cache = (scope / unmanagedFileStampCache).value
diff --git a/scripted-sbt/src/main/scala/sbt/scriptedtest/ScriptedTests.scala b/scripted-sbt/src/main/scala/sbt/scriptedtest/ScriptedTests.scala
index ed4c6c92f..aa76a809e 100644
--- a/scripted-sbt/src/main/scala/sbt/scriptedtest/ScriptedTests.scala
+++ b/scripted-sbt/src/main/scala/sbt/scriptedtest/ScriptedTests.scala
@@ -590,7 +590,7 @@ class ScriptedRunner {
     val scriptedRunners =
       runner.batchScriptedRunner(scriptedTests, addTestFile, groupCount, prop, logger)
     if (parallelExecution && instances > 1) {
-      import sbt.internal.CompatParColls.Converters._
+      import scala.collection.parallel.CollectionConverters.*
       val parallelRunners = scriptedRunners.toArray.par
       parallelRunners.tasksupport = new ForkJoinTaskSupport(new ForkJoinPool(instances))
       runAll(parallelRunners)