diff --git a/sbt-plugin/src/sbt-test/wartremover/basic/build.sbt b/sbt-plugin/src/sbt-test/wartremover/basic/build.sbt
index ec88b84..6a9e888 100644
--- a/sbt-plugin/src/sbt-test/wartremover/basic/build.sbt
+++ b/sbt-plugin/src/sbt-test/wartremover/basic/build.sbt
@@ -1,3 +1,3 @@
-crossScalaVersions := Seq("2.11.12", "2.12.17", "2.13.10", "3.1.1")
+crossScalaVersions := Seq("2.11.12", "2.12.20", "2.13.10", "3.1.1")
 
 wartremoverErrors ++= ContribWart.All