diff --git a/build.sbt b/build.sbt
index 1a88b778d..29c34d36d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -96,7 +96,7 @@ lazy val kyo =
         `kyo-bench`
     )
 
-val zioVersion = "2.0.19"
+val zioVersion = "2.0.21"
 
 lazy val `kyo-core-settings` = `kyo-settings` ++ Seq(
     libraryDependencies += "dev.zio"       %%% "izumi-reflect"     % "2.3.8",