diff --git a/build.sbt b/build.sbt
index 793da02b..8808d5aa 100644
--- a/build.sbt
+++ b/build.sbt
@@ -82,7 +82,7 @@ enablePlugins(ZioSbtEcosystemPlugin)
 inThisBuild(
   Seq(
     name               := "Tamer",
-    zioVersion         := "2.0.22",
+    zioVersion         := "2.1.1",
     organization       := "io.laserdisc",
     scalaVersion       := scala213.value,
     crossScalaVersions := Seq(scala213.value, scala3.value),