diff --git a/community-build/community-projects/stdLib213 b/community-build/community-projects/stdLib213
index b6f70d2347f2..3f6bdaeafde1 160000
--- a/community-build/community-projects/stdLib213
+++ b/community-build/community-projects/stdLib213
@@ -1 +1 @@
-Subproject commit b6f70d2347f2857695e5c0fe544b0f921544b02a
+Subproject commit 3f6bdaeafde17d790023cc3f299b81eaaf876ca3
diff --git a/project/Build.scala b/project/Build.scala
index 7dfbb1cd3226..0c80fdd4450e 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -208,8 +208,8 @@ object Build {
    *  scala-library.
    */
   def stdlibVersion(implicit mode: Mode): String = mode match {
-    case NonBootstrapped => "2.13.15"
-    case Bootstrapped => "2.13.15"
+    case NonBootstrapped => "2.13.16"
+    case Bootstrapped => "2.13.16"
   }
 
   /** Version of the scala-library for which we will generate TASTy.
@@ -219,7 +219,7 @@ object Build {
    *  We can use nightly versions to tests the future compatibility in development.
    *  Nightly versions: https://scala-ci.typesafe.com/ui/native/scala-integration/org/scala-lang
    */
-  val stdlibBootstrappedVersion = "2.13.15"
+  val stdlibBootstrappedVersion = "2.13.16"
 
   val dottyOrganization = "org.scala-lang"
   val dottyGithubUrl = "https://github.com/scala/scala3"
@@ -739,6 +739,13 @@ object Build {
       // Use source 3.3 to avoid fatal migration warnings on scalajs-ir
       scalacOptions ++= Seq("-source", "3.3"),
 
+      /* Ignore a deprecation warning about AnyRefMap in scalajs-ir. The latter
+       * cross-compiles for 2.12, and therefore AnyRefMap remains useful there
+       * for performance reasons.
+       * The build of Scala.js core does the same thing.
+       */
+      scalacOptions += "-Wconf:cat=deprecation&origin=scala\\.collection\\.mutable\\.AnyRefMap.*:s",
+
       // Generate compiler.properties, used by sbt
       (Compile / resourceGenerators) += Def.task {
         import java.util._
@@ -1479,7 +1486,7 @@ object Build {
       BuildInfoPlugin.buildInfoDefaultSettings
 
   lazy val presentationCompilerSettings = {
-    val mtagsVersion = "1.4.1"
+    val mtagsVersion = "1.4.2"
     Seq(
       libraryDependencies ++= Seq(
         "org.lz4" % "lz4-java" % "1.8.0",
@@ -1489,7 +1496,7 @@ object Build {
           .exclude("org.eclipse.lsp4j","org.eclipse.lsp4j.jsonrpc"),
         "org.eclipse.lsp4j" % "org.eclipse.lsp4j" % "0.20.1",
       ),
-      libraryDependencies += ("org.scalameta" % "mtags-shared_2.13.15" % mtagsVersion % SourceDeps),
+      libraryDependencies += ("org.scalameta" % "mtags-shared_2.13.16" % mtagsVersion % SourceDeps),
       ivyConfigurations += SourceDeps.hide,
       transitiveClassifiers := Seq("sources"),
       scalacOptions ++= Seq("-source", "3.3"), // To avoid fatal migration warnings
diff --git a/tests/patmat/i7186.scala b/tests/patmat/i7186.scala
index d828cc78b070..f398eb39da77 100644
--- a/tests/patmat/i7186.scala
+++ b/tests/patmat/i7186.scala
@@ -92,7 +92,7 @@ object printMips {
 
   def apply(nodes: List[Assembler]): Unit = {
     var symbCount = 0L
-    val symbols = new scala.collection.mutable.AnyRefMap[Scoped,Long]()
+    val symbols = new scala.collection.mutable.HashMap[Scoped,Long]()
 
     print(mipsNode(nodes, "  "))