diff --git a/project/MySettings.scala b/project/MySettings.scala
index bb712bdb6..a394ad5b7 100644
--- a/project/MySettings.scala
+++ b/project/MySettings.scala
@@ -57,7 +57,7 @@ object MySettings {
 
   lazy val commonScalaJsSettings = Seq(
     scalacOptions ++= Seq("-P:scalajs:sjsDefinedByDefault").filter { _ =>
-      Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("1.0.1").startsWith("0.6.")
+      Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("1.1.0").startsWith("0.6.")
     },
     scalaJSLinkerConfig ~= {
       _.withModuleKind(ModuleKind.CommonJSModule)
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 9c872c659..ef0cafd6f 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,5 +1,5 @@
 val scalaJSVersion =
-  Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("1.0.1")
+  Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("1.1.0")
 
 addSbtPlugin("org.scala-js"      % "sbt-scalajs"   % scalaJSVersion)
 addSbtPlugin("org.scalameta"     % "sbt-scalafmt"  % "2.4.0")