diff --git a/build.sbt b/build.sbt
index 77cb24a..f2e44ff 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,7 +2,7 @@ name := "EffectOrientedProgramming"
 
 scalaVersion := "3.7.1"
 
-val zioVersion = "2.1.20"
+val zioVersion = "2.1.23"
 
 libraryDependencies ++= Seq(
   "dev.zio" %% "zio" % zioVersion,