diff --git a/build.sbt b/build.sbt
index cf313646..2bb5b525 100644
--- a/build.sbt
+++ b/build.sbt
@@ -8,7 +8,7 @@ inThisBuild(
   List(
     name              := "ZIO Telemetry",
     organization      := "dev.zio",
-    zioVersion        := "2.1.3",
+    zioVersion        := "2.1.5",
     homepage          := Some(url("https://zio.dev/zio-telemetry/")),
     licenses          := List("Apache-2.0" -> url("http://www.apache.org/licenses/LICENSE-2.0")),
     developers        := List(
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 3e2c2f69..9561a44e 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -7,7 +7,7 @@ object Dependencies {
     val opentelemetry         = "1.39.0"
     val opencensus            = "0.31.1"
     val scalaCollectionCompat = "2.12.0"
-    val zio                   = "2.1.3"
+    val zio                   = "2.1.5"
     val zioLogging            = "2.1.17"
     val izumiReflect          = "2.3.9"
   }
diff --git a/scala-cli/opentelemetry-zio-logging/ZioLoggingApp.scala b/scala-cli/opentelemetry-zio-logging/ZioLoggingApp.scala
index 788a0833..51e6b7c7 100644
--- a/scala-cli/opentelemetry-zio-logging/ZioLoggingApp.scala
+++ b/scala-cli/opentelemetry-zio-logging/ZioLoggingApp.scala
@@ -1,5 +1,5 @@
 //> using scala "2.13.14"
-//> using dep dev.zio::zio:2.1.3
+//> using dep dev.zio::zio:2.1.5
 //> using dep dev.zio::zio-opentelemetry:3.0.0-RC24
 //> using dep dev.zio::zio-opentelemetry-zio-logging:3.0.0-RC24
 //> using dep io.opentelemetry:opentelemetry-sdk:1.39.0
diff --git a/scala-cli/opentelemetry/BaggageApp.scala b/scala-cli/opentelemetry/BaggageApp.scala
index d866a373..8b53399f 100644
--- a/scala-cli/opentelemetry/BaggageApp.scala
+++ b/scala-cli/opentelemetry/BaggageApp.scala
@@ -1,5 +1,5 @@
 //> using scala "2.13.14"
-//> using dep dev.zio::zio:2.1.3
+//> using dep dev.zio::zio:2.1.5
 //> using dep dev.zio::zio-opentelemetry:3.0.0-RC24
 
 import zio._
diff --git a/scala-cli/opentelemetry/LoggingApp.scala b/scala-cli/opentelemetry/LoggingApp.scala
index eff42172..9c36cd5d 100644
--- a/scala-cli/opentelemetry/LoggingApp.scala
+++ b/scala-cli/opentelemetry/LoggingApp.scala
@@ -1,5 +1,5 @@
 //> using scala "2.13.14"
-//> using dep dev.zio::zio:2.1.3
+//> using dep dev.zio::zio:2.1.5
 //> using dep dev.zio::zio-opentelemetry:3.0.0-RC24
 //> using dep io.opentelemetry:opentelemetry-sdk:1.39.0
 //> using dep io.opentelemetry:opentelemetry-sdk-trace:1.39.0
diff --git a/scala-cli/opentelemetry/MetricsApp.scala b/scala-cli/opentelemetry/MetricsApp.scala
index 83cbe7f7..7c8773bc 100644
--- a/scala-cli/opentelemetry/MetricsApp.scala
+++ b/scala-cli/opentelemetry/MetricsApp.scala
@@ -1,5 +1,5 @@
 //> using scala "2.13.14"
-//> using dep dev.zio::zio:2.1.3
+//> using dep dev.zio::zio:2.1.5
 //> using dep dev.zio::zio-opentelemetry:3.0.0-RC24
 //> using dep io.opentelemetry:opentelemetry-sdk:1.39.0
 //> using dep io.opentelemetry:opentelemetry-sdk-trace:1.39.0
diff --git a/scala-cli/opentelemetry/PropagatingApp.scala b/scala-cli/opentelemetry/PropagatingApp.scala
index 07b172a1..de01b30b 100644
--- a/scala-cli/opentelemetry/PropagatingApp.scala
+++ b/scala-cli/opentelemetry/PropagatingApp.scala
@@ -1,5 +1,5 @@
 //> using scala "2.13.14"
-//> using dep dev.zio::zio:2.1.3
+//> using dep dev.zio::zio:2.1.5
 //> using dep dev.zio::zio-opentelemetry:3.0.0-RC24
 //> using dep io.opentelemetry:opentelemetry-sdk:1.39.0
 //> using dep io.opentelemetry:opentelemetry-sdk-trace:1.39.0
diff --git a/scala-cli/opentelemetry/TracingApp.scala b/scala-cli/opentelemetry/TracingApp.scala
index f8ba19c0..2ed1bb86 100644
--- a/scala-cli/opentelemetry/TracingApp.scala
+++ b/scala-cli/opentelemetry/TracingApp.scala
@@ -1,5 +1,5 @@
 //> using scala "2.13.14"
-//> using dep dev.zio::zio:2.1.3
+//> using dep dev.zio::zio:2.1.5
 //> using dep dev.zio::zio-opentelemetry:3.0.0-RC24
 //> using dep io.opentelemetry:opentelemetry-sdk:1.39.0
 //> using dep io.opentelemetry:opentelemetry-sdk-trace:1.39.0