diff --git a/project/build.sbt b/project/build.sbt
index 87e2656..9bd9e7e 100644
--- a/project/build.sbt
+++ b/project/build.sbt
@@ -11,4 +11,5 @@ inThisBuild(List(
       url("https://geirsson.com")
     )
   )
-))
\ No newline at end of file
+))
+scalaVersion := "2.13.14"
\ No newline at end of file