diff --git a/project/ScalaVersions.scala b/project/ScalaVersions.scala
index 819949b..4a1baea 100644
--- a/project/ScalaVersions.scala
+++ b/project/ScalaVersions.scala
@@ -1,5 +1,5 @@
 object ScalaVersions {
-  def scala212 = "2.12.18"
-  def scala213 = "2.13.11"
+  def scala212 = "2.12.20"
+  def scala213 = "2.13.15"
   def all = Seq(scala213, scala212)
 }