diff --git a/build.sbt b/build.sbt
index cf5fd956..94c125ec 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,7 +2,7 @@ import sbtcrossproject.CrossProject
 import sbtcrossproject.CrossType
 
 val scalatestVersion = "3.2.9"
-val defaultScala213 = "2.13.5"
+val defaultScala213 = "2.13.6"
 val bin212 = Seq("2.12.13", "2.12.12", "2.12.11", "2.12.10", "2.12.9", "2.12.8")
 val bin213 =
   Seq(defaultScala213, "2.13.4", "2.13.3", "2.13.2", "2.13.1", "2.13.0")