diff --git a/build.sbt b/build.sbt
index 74e6e91..607be46 100644
--- a/build.sbt
+++ b/build.sbt
@@ -11,7 +11,7 @@ val thriftVersion = "0.20.0"    // remember to also update package.json if the t
 
 val artifactProductionSettings = Seq(
   organization := "com.gu",
-  scalaVersion := "2.13.12",
+  scalaVersion := "2.13.18",
   // downgrade scrooge reserved word clashes to warnings
   Compile / scroogeDisableStrict := true,
   // Scrooge 21.3.0 dropped support for scala < 2.12, so we can only build for Scala 2.12+