diff --git a/project/ScalaVersions.scala b/project/ScalaVersions.scala
index 389d35ad1..8a01c0bb9 100644
--- a/project/ScalaVersions.scala
+++ b/project/ScalaVersions.scala
@@ -4,5 +4,5 @@ object ScalaVersions {
   @deprecated(
     "Use Scala 2.13 or Scala 3. Don't use 2.12 unless it is a specific feature in 2.12."
   )
-  val scala212Version = "2.12.20"
+  val scala212Version = "2.12.21"
 }