diff --git a/build.sbt b/build.sbt
index bd0ca72..71e78e7 100644
--- a/build.sbt
+++ b/build.sbt
@@ -10,7 +10,7 @@ inThisBuild(
       "Apache-2.0" -> url("http://www.apache.org/licenses/LICENSE-2.0")
     ),
     scalaVersion := "3.7.4",
-    crossScalaVersions := Seq("2.12.20", "2.13.16", "3.7.4"),
+    crossScalaVersions := Seq("2.12.21", "2.13.16", "3.7.4"),
     developers := List(
       Developer(
         "vmandrychenko",