diff --git a/project/build.scala b/project/build.scala
index 5928656..7cec5a6 100644
--- a/project/build.scala
+++ b/project/build.scala
@@ -5,7 +5,7 @@ import xerial.sbt.Sonatype._
 object build {
   val etcd4sSettings = Seq(
     organization := "com.github.mingchuno",
-    scalaVersion := "2.13.8",
+    scalaVersion := "2.13.18",
     version      := "0.4.0",
     crossScalaVersions := Seq("2.12.10", "2.13.4"),
     scalacOptions ++= Seq(