diff --git a/build.sbt b/build.sbt
index d523527..7a08205 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 import scala.sys.process._
 
-val scalaVersions = Seq("3.3.3", "2.13.13", "2.12.19", "2.11.12")
+val scalaVersions = Seq("3.4.1", "2.13.13", "2.12.19", "2.11.12")
 val macrosParadiseVersion = "2.1.1"
 
 ThisBuild / versionScheme := Some("semver-spec")
diff --git a/plugin/src/sbt-test/sbt-jni/simple-syntax/project/ScriptedHelper.scala b/plugin/src/sbt-test/sbt-jni/simple-syntax/project/ScriptedHelper.scala
index 454ae73..00c4d8f 100644
--- a/plugin/src/sbt-test/sbt-jni/simple-syntax/project/ScriptedHelper.scala
+++ b/plugin/src/sbt-test/sbt-jni/simple-syntax/project/ScriptedHelper.scala
@@ -8,7 +8,7 @@ object ScriptedHelper extends AutoPlugin {
 
   override def projectSettings = Seq(
     scalacOptions ++= Seq("-feature", "-deprecation"),
-    crossScalaVersions := Seq("3.3.3", "2.13.13", "2.12.19"),
+    crossScalaVersions := Seq("3.4.1", "2.13.13", "2.12.19"),
     scalaVersion := crossScalaVersions.value.head
   )