diff --git a/build.sbt b/build.sbt
index fbb71fa..bef9e90 100644
--- a/build.sbt
+++ b/build.sbt
@@ -35,7 +35,9 @@
     scriptedBufferLog := false,
     addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.2"),
     addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.28"),
-    addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")
+    addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0"),
+    addSbtPlugin("io.github.cquiroz" % "sbt-tzdb" % "1.0.1"),
+    addSbtPlugin("io.github.cquiroz" % "sbt-locales" % "2.6.0")
   )
 
 lazy val `iw-project-support` = (project in file("."))

diff --git a/build.sbt b/build.sbt
index fbb71fa..bef9e90 100644
--- a/build.sbt
+++ b/build.sbt
@@ -35,7 +35,9 @@
     scriptedBufferLog := false,
     addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.2"),
     addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.28"),
-    addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")
+    addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0"),
+    addSbtPlugin("io.github.cquiroz" % "sbt-tzdb" % "1.0.1"),
+    addSbtPlugin("io.github.cquiroz" % "sbt-locales" % "2.6.0")
   )
 
 lazy val `iw-project-support` = (project in file("."))
diff --git a/sbt-iw-plugin-presets/src/main/scala/works/iterative/sbt/IWPluginPresets.scala b/sbt-iw-plugin-presets/src/main/scala/works/iterative/sbt/IWPluginPresets.scala
index 055249d..40143ad 100644
--- a/sbt-iw-plugin-presets/src/main/scala/works/iterative/sbt/IWPluginPresets.scala
+++ b/sbt-iw-plugin-presets/src/main/scala/works/iterative/sbt/IWPluginPresets.scala
@@ -27,7 +27,7 @@
     val addLocales: Def.Setting[_] =
       addSbtPlugin("io.github.cquiroz" % "sbt-locales" % "2.6.0")
     val addScalaJS: Def.Setting[_] =
-      addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.5.1")
+      addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.7.0")
     val addScalaJSCrossproject: Def.Setting[_] =
       addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")
     val addSbtScalaJSMap: Def.Setting[_] =

diff --git a/build.sbt b/build.sbt
index fbb71fa..bef9e90 100644
--- a/build.sbt
+++ b/build.sbt
@@ -35,7 +35,9 @@
     scriptedBufferLog := false,
     addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.2"),
     addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.28"),
-    addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")
+    addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0"),
+    addSbtPlugin("io.github.cquiroz" % "sbt-tzdb" % "1.0.1"),
+    addSbtPlugin("io.github.cquiroz" % "sbt-locales" % "2.6.0")
   )
 
 lazy val `iw-project-support` = (project in file("."))
diff --git a/sbt-iw-plugin-presets/src/main/scala/works/iterative/sbt/IWPluginPresets.scala b/sbt-iw-plugin-presets/src/main/scala/works/iterative/sbt/IWPluginPresets.scala
index 055249d..40143ad 100644
--- a/sbt-iw-plugin-presets/src/main/scala/works/iterative/sbt/IWPluginPresets.scala
+++ b/sbt-iw-plugin-presets/src/main/scala/works/iterative/sbt/IWPluginPresets.scala
@@ -27,7 +27,7 @@
     val addLocales: Def.Setting[_] =
       addSbtPlugin("io.github.cquiroz" % "sbt-locales" % "2.6.0")
     val addScalaJS: Def.Setting[_] =
-      addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.5.1")
+      addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.7.0")
     val addScalaJSCrossproject: Def.Setting[_] =
       addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")
     val addSbtScalaJSMap: Def.Setting[_] =
diff --git a/sbt-iw-projects/src/main/scala/works/iterative/sbt/IWMaterialsPlugin.scala b/sbt-iw-projects/src/main/scala/works/iterative/sbt/IWMaterialsPlugin.scala
index d0ae2d1..0eee2d2 100644
--- a/sbt-iw-projects/src/main/scala/works/iterative/sbt/IWMaterialsPlugin.scala
+++ b/sbt-iw-projects/src/main/scala/works/iterative/sbt/IWMaterialsPlugin.scala
@@ -3,6 +3,10 @@
 import sbt._
 import sbt.Keys._
 import org.portablescala.sbtplatformdeps.PlatformDepsPlugin.autoImport._
+import _root_.io.gitub.sbt.tzdb.TzdbPlugin
+import _root_.io.gitub.sbt.tzdb.TzdbPlugin.autoImport._
+import locales.LocalesPlugin
+import locales.LocalesPlugin.autoImport._
 
 object IWMaterialsPlugin extends AutoPlugin {
   override def trigger: PluginTrigger = allRequirements
@@ -105,4 +109,50 @@
 
   val laminextFetch: Def.Setting[_] =
     libraryDependencies += "io.laminext" %%% "fetch" % "0.13.10"
+
+  val addScalaJavaTime: Def.Setting[_] =
+    libraryDependencies += "io.github.cquiroz" %%% "scala-java-time" % "2.2.2"
+
+  val addScalaJavaLocales: Def.Setting[_] =
+    libraryDependencies += "io.github.cquiroz" %%% "scala-java-locales" % "1.1.3"
+
+  def useScalaJavaTimeAndLocales(proj: Project): Project =
+    proj
+      .enablePlugins(TzdbPlugin, LocalesPlugin)
+      .settings(
+        addScalaJavaTime,
+        addScalaJavaLocales,
+        localesFilter := locales.LocalesFilter
+          .Selection("en-US", "en", "cs-CZ", "cs"),
+        currencyFilter := locales.CurrencyFilter.Selection(
+          "AUD",
+          "BGN",
+          "CAD",
+          "CNY",
+          "CZK",
+          "DKK",
+          "EUR",
+          "GBP",
+          "HKD",
+          "HRK",
+          "HUF",
+          "CHF",
+          "ILS",
+          "JPY",
+          "KRW",
+          "NOK",
+          "NZD",
+          "PLN",
+          "RON",
+          "RUB",
+          "SEK",
+          "TRY",
+          "USD"
+        ),
+        supportISOCodes := false,
+        supportNumberFormats := true,
+        zonesFilter := { (z: String) =>
+          z == "Europe/Prague" || z == "CET" || z == "Etc/UTC" || z == "UTC"
+        }
+      )
 }