diff --git a/build.sbt b/build.sbt
index 58dbd07..d796dc4 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.13.17"
+ThisBuild / scalaVersion := "2.13.18"
 ThisBuild / version := "1.0.0"
 ThisBuild / organization := "click.seichi"