diff --git a/build.sbt b/build.sbt
index c23e0275..a2546f4c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -25,7 +25,7 @@ lazy val root = (project in file(".")).
   settings(
     inThisBuild(List(
       organization := "uk.gov.homeoffice.drt",
-      scalaVersion := "2.13.12"
+      scalaVersion := "2.13.15"
     )),
 
     version := sys.env.getOrElse("DRONE_BUILD_NUMBER", sys.env.getOrElse("BUILD_ID", "DEV")),