diff --git a/build.sbt b/build.sbt
index 24432bc..0b5935c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -5,7 +5,7 @@ val V = new {
   val scalacheck      = "1.14.3"
   val http4s          = "0.21.4"
   val doobie          = "0.9.0"
-  val zio             = "1.0.0-RC20"
+  val zio             = "1.0.0-RC21-2"
   val zioCats         = "2.0.0.0-RC14"
   val kindProjector   = "0.11.0"
   val circeDerivation = "0.13.0-M4"