diff --git a/build.sbt b/build.sbt
index d959d88..0e2916a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,7 +2,7 @@ val scala212 = "2.12.18"
 val scala213 = "2.13.12"
 val scala3 = "3.3.5"
 
-val zio2Version = "2.1.17"
+val zio2Version = "2.1.20"
 
 def scalacOptions212(jdk: Int) = Seq(
   "-Ypartial-unification",