diff --git a/build.sbt b/build.sbt
index 02e5aefc..ef3f25cb 100644
--- a/build.sbt
+++ b/build.sbt
@@ -36,7 +36,7 @@ ThisBuild / tlSitePublishBranch := Some("scala3")
 ThisBuild / githubWorkflowJavaVersions := Seq(JavaSpec.temurin("17"))
 
 ThisBuild / resolvers ++= Resolver.sonatypeOssRepos("snapshots")
-ThisBuild / crossScalaVersions := Seq("3.4.3")
+ThisBuild / crossScalaVersions := Seq("3.5.0")
 
 // run tests sequentially for easier failure debugging
 Test / parallelExecution := false