diff --git a/build.sbt b/build.sbt
index 3b57fdca..84712347 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,7 +1,7 @@
 import com.typesafe.tools.mima.core._
 
 val Scala213 = "2.13.18"
-val Scala212 = "2.12.20"
+val Scala212 = "2.12.21"
 val Scala3 = "3.3.7"
 
 ThisBuild / tlBaseVersion := "2.7"