diff --git a/build.sbt b/build.sbt
index e3194d83..4fe50ea2 100644
--- a/build.sbt
+++ b/build.sbt
@@ -23,7 +23,7 @@ developers := List(
 )
 
 scalaVersion := "2.13.6"
-crossScalaVersions := Seq("2.11.12", "2.12.13", "2.12.14", "2.13.5", "2.13.6")
+crossScalaVersions := Seq("2.11.12", "2.12.13", "2.12.15", "2.13.5", "2.13.6")
 autoScalaLibrary := false
 crossVersion := CrossVersion.full
 crossTarget := {