diff --git a/build.sbt b/build.sbt
index 5c3c7be..40e98a1 100644
--- a/build.sbt
+++ b/build.sbt
@@ -15,10 +15,10 @@ ThisBuild / tlSonatypeUseLegacyHost := true // publish to oss.sonatype.org
 // publish website from this branch
 ThisBuild / tlSitePublishBranch := Some("main")
 
-val Scala213 = "2.13.14"
-val scalafixV = "0.12.1"
+val Scala213 = "2.13.15"
+val scalafixV = "0.13.0"
 
-ThisBuild / crossScalaVersions := Seq(Scala213, "2.12.19")
+ThisBuild / crossScalaVersions := Seq(Scala213, "2.12.20")
 ThisBuild / scalaVersion := Scala213 // the default Scala
 ThisBuild / tlJdkRelease := Some(8) // the JVM to target
 ThisBuild / githubWorkflowJavaVersions := Seq(