diff --git a/project/MultiNode.scala b/project/MultiNode.scala
index d90d3bedb6..0021487286 100644
--- a/project/MultiNode.scala
+++ b/project/MultiNode.scala
@@ -52,7 +52,7 @@ object MultiNode extends AutoPlugin {
   override lazy val projectSettings: Seq[Def.Setting[_]] = multiJvmSettings
 
   private lazy val defaultMultiJvmOptions: Seq[String] = {
-    import scala.collection.JavaConverters._
+    import scala.jdk.CollectionConverters._
     // multinode.D= and multinode.X= makes it possible to pass arbitrary
     // -D or -X arguments to the forked jvm, e.g.
     // -Dmultinode.Djava.net.preferIPv4Stack=true -Dmultinode.Xmx512m -Dmultinode.XX:MaxPermSize=256M
diff --git a/project/PekkoBuild.scala b/project/PekkoBuild.scala
index acc4b31e98..c315a8f9d9 100644
--- a/project/PekkoBuild.scala
+++ b/project/PekkoBuild.scala
@@ -303,7 +303,7 @@ object PekkoBuild {
     doc / javacOptions ++= Seq("-Xdoclint:none", "--ignore-source-errors"))
 
   def loadSystemProperties(fileName: String): Unit = {
-    import scala.collection.JavaConverters._
+    import scala.jdk.CollectionConverters._
     val file = new File(fileName)
     if (file.exists()) {
       println("Loading system properties from file `" + fileName + "`")
diff --git a/project/ProjectFileIgnoreSupport.scala b/project/ProjectFileIgnoreSupport.scala
index fa055c94fb..641135f9b2 100644
--- a/project/ProjectFileIgnoreSupport.scala
+++ b/project/ProjectFileIgnoreSupport.scala
@@ -31,13 +31,13 @@ class ProjectFileIgnoreSupport(ignoreConfigFile: File, descriptor: String) {
   }
 
   private lazy val ignoredFiles: Set[String] = {
-    import scala.collection.JavaConverters._
+    import scala.jdk.CollectionConverters._
     stdoutLogger.debug(s"Loading ignored-files from $ignoreConfigFile:[${ignoreConfig.origin().url().toURI.getPath}]")
     ignoreConfig.getStringList("ignored-files").asScala.toSet
   }
 
   private lazy val ignoredPackages: Set[String] = {
-    import scala.collection.JavaConverters._
+    import scala.jdk.CollectionConverters._
     stdoutLogger.debug(
       s"Loading ignored-packages from $ignoreConfigFile:[${ignoreConfig.origin().url().toURI.getPath}]")
     ignoreConfig.getStringList("ignored-packages").asScala.toSet