diff --git a/examples/free/build.sbt b/examples/free/build.sbt
index aa83ada3..8defd47e 100644
--- a/examples/free/build.sbt
+++ b/examples/free/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.13.12" // needed for fancy type inference
+scalaVersion := "2.13.13" // needed for fancy type inference
 scalacOptions ++= Seq(
   "-deprecation",
   "-encoding",