diff --git a/build.sbt b/build.sbt
index bda50a8..8fef415 100644
--- a/build.sbt
+++ b/build.sbt
@@ -24,7 +24,7 @@ val compilerOptions = Seq(
 val buildSettings = Seq(
   organization := "io.scalac",
   scalaVersion := "2.13.2",
-  crossScalaVersions := Seq("2.12.11", "2.13.2"),
+  crossScalaVersions := Seq("2.12.15", "2.13.2"),
   scalacOptions ++= {
     if (priorTo2_13(scalaVersion.value)) compilerOptions
     else