diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e726212e..9c2e2988 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
       fail-fast: false
       matrix:
         java: ['adopt@1.8', 'adopt@1.11']
-        scala: ['2.11.12', '2.12.13', '2.13.4', "3.0.0-M3"]
+        scala: ['2.11.12', '2.12.13', '2.13.4', "3.0.0-RC1"]
         platform: ['JVM', 'JS']
     steps:
       - name: Checkout current branch
@@ -45,13 +45,13 @@ jobs:
       - name: Cache scala dependencies
         uses: coursier/cache-action@v5
       - name: Run tests
-        if: matrix.scala != '3.0.0-M3'
+        if: matrix.scala != '3.0.0-RC1'
         run: sbt ++${{ matrix.scala }}! test${{ matrix.platform }}
       - name: Run dotty tests
-        if: matrix.scala == '3.0.0-M3' && matrix.platform == 'JVM'
+        if: matrix.scala == '3.0.0-RC1' && matrix.platform == 'JVM'
         run: sbt ++${{ matrix.scala }}! testJVM
       - name: Compile additional subprojects
-        if: matrix.scala != '3.0.0-M3'
+        if: matrix.scala != '3.0.0-RC1'
         run: sbt ++${{ matrix.scala }}! examples/compile docs/compile benchmarks/compile
 
   publish:
diff --git a/build.sbt b/build.sbt
index dd366563..01e3659c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -31,7 +31,7 @@ inThisBuild(
 
 ThisBuild / publishTo := sonatypePublishToBundle.value
 
-val ZioVersion           = "1.0.4-2"
+val ZioVersion           = "1.0.5"
 val scalaJavaTimeVersion = "2.0.0-RC5"
 val slf4jVersion         = "1.7.30"
 
diff --git a/project/BuildHelper.scala b/project/BuildHelper.scala
index 4123ae8b..2e00c3aa 100644
--- a/project/BuildHelper.scala
+++ b/project/BuildHelper.scala
@@ -28,7 +28,7 @@ object BuildHelper {
   final private val Scala211 = "2.11.12"
   final private val Scala212 = "2.12.13"
   final private val Scala213 = "2.13.4"
-  final private val Scala3   = "3.0.0-M3"
+  final private val Scala3   = "3.0.0-RC1"
 
   final val scala3Settings = Seq(
     crossScalaVersions += Scala3