diff --git a/build.sbt b/build.sbt
index 5ae77b7..cc1123c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -7,7 +7,7 @@ import xerial.sbt.Sonatype._
 val scala2 = "2.13.12"
 val scala3 = "3.3.1"
 
-val zioVersion       = "2.0.19"
+val zioVersion       = "2.0.21"
 val zioSchemaVersion = "0.4.16"
 
 name := "desert"