diff --git a/build.sbt b/build.sbt
index 96a4abcb8..31f876df5 100644
--- a/build.sbt
+++ b/build.sbt
@@ -7,7 +7,7 @@ def scala3 = "3.0.1"
 def scala2Versions = List(scala212, scala211, scala213)
 def allScalaVersions = scala2Versions :+ scala3
 
-def scalajs = "1.5.1"
+def scalajs = "1.6.0"
 def scalajsBinaryVersion = "1"
 def scalajsDom = "1.1.0"
 
diff --git a/mdoc-sbt/src/sbt-test/sbt-mdoc/basic/project/plugins.sbt b/mdoc-sbt/src/sbt-test/sbt-mdoc/basic/project/plugins.sbt
index 299dab883..15afb2bf8 100644
--- a/mdoc-sbt/src/sbt-test/sbt-mdoc/basic/project/plugins.sbt
+++ b/mdoc-sbt/src/sbt-test/sbt-mdoc/basic/project/plugins.sbt
@@ -1,3 +1,3 @@
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.5.1")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.6.0")
 addSbtPlugin("org.scalameta" % "sbt-mdoc" % sys.props("plugin.version"))
 addSbtCoursier