diff --git a/build.sbt b/build.sbt
index eb0b2a4..be80e1c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -20,7 +20,7 @@ val scala3   = "3.3.3"
 
 lazy val Version = new {
   val munit         = "1.0.0"
-  val zio           = "2.1.7"
+  val zio           = "2.1.9"
   val scalaJavaTime = "2.6.0"
 }