diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b0a3f94..dbee801 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,7 +4,6 @@
 name: CI
 env:
   JDK_JAVA_OPTIONS: -XX:+PrintCommandLineFlags -Xms6G -Xmx6G -Xss4M -XX:+UseG1GC
-  JVM_OPTS: -XX:+PrintCommandLineFlags -Xms6G -Xmx6G -Xss4M -XX:+UseG1GC
 'on':
   workflow_dispatch: {}
   release:
@@ -14,7 +13,6 @@ env:
     branches:
     - main
   pull_request: {}
-  create: {}
 jobs:
   build:
     name: Build
@@ -22,16 +20,16 @@ jobs:
     continue-on-error: true
     steps:
     - name: Git Checkout
-      uses: actions/checkout@v3.6.0
+      uses: actions/checkout@v4.1.0
       with:
         fetch-depth: '0'
     - name: Install libuv
       run: sudo apt-get update && sudo apt-get install -y libuv1-dev
     - name: Setup Scala
-      uses: actions/setup-java@v3.12.0
+      uses: actions/setup-java@v3.13.0
       with:
-        distribution: temurin
-        java-version: '8'
+        distribution: corretto
+        java-version: '17'
         check-latest: true
     - name: Cache Dependencies
       uses: coursier/cache-action@v6
@@ -47,16 +45,16 @@ jobs:
     continue-on-error: false
     steps:
     - name: Git Checkout
-      uses: actions/checkout@v3.6.0
+      uses: actions/checkout@v4.1.0
       with:
         fetch-depth: '0'
     - name: Install libuv
       run: sudo apt-get update && sudo apt-get install -y libuv1-dev
     - name: Setup Scala
-      uses: actions/setup-java@v3.12.0
+      uses: actions/setup-java@v3.13.0
       with:
-        distribution: temurin
-        java-version: '8'
+        distribution: corretto
+        java-version: '17'
         check-latest: true
     - name: Cache Dependencies
       uses: coursier/cache-action@v6
@@ -72,22 +70,22 @@ jobs:
       fail-fast: false
       matrix:
         java:
-        - '8'
         - '11'
         - '17'
+        - '21'
     steps:
     - name: Install libuv
       run: sudo apt-get update && sudo apt-get install -y libuv1-dev
     - name: Setup Scala
-      uses: actions/setup-java@v3.12.0
+      uses: actions/setup-java@v3.13.0
       with:
-        distribution: temurin
+        distribution: corretto
         java-version: ${{ matrix.java }}
         check-latest: true
     - name: Cache Dependencies
       uses: coursier/cache-action@v6
     - name: Git Checkout
-      uses: actions/checkout@v3.6.0
+      uses: actions/checkout@v4.1.0
       with:
         fetch-depth: '0'
     - name: Test
@@ -99,16 +97,16 @@ jobs:
     if: ${{ github.event_name == 'push' }}
     steps:
     - name: Git Checkout
-      uses: actions/checkout@v3.6.0
+      uses: actions/checkout@v4.1.0
       with:
         fetch-depth: '0'
     - name: Install libuv
       run: sudo apt-get update && sudo apt-get install -y libuv1-dev
     - name: Setup Scala
-      uses: actions/setup-java@v3.12.0
+      uses: actions/setup-java@v3.13.0
       with:
-        distribution: temurin
-        java-version: '8'
+        distribution: corretto
+        java-version: '17'
         check-latest: true
     - name: Cache Dependencies
       uses: coursier/cache-action@v6
@@ -128,7 +126,7 @@ jobs:
         app_private_key: ${{ secrets.APP_PRIVATE_KEY }}
     - name: Create Pull Request
       id: cpr
-      uses: peter-evans/create-pull-request@v5.0.0
+      uses: peter-evans/create-pull-request@v5.0.2
       with:
         body: |-
           Autogenerated changes after running the `sbt docs/generateReadme` command of the [zio-sbt-website](https://zio.dev/zio-sbt) plugin.
@@ -173,16 +171,16 @@ jobs:
     if: ${{ github.event_name != 'pull_request' }}
     steps:
     - name: Git Checkout
-      uses: actions/checkout@v3.6.0
+      uses: actions/checkout@v4.1.0
       with:
         fetch-depth: '0'
     - name: Install libuv
       run: sudo apt-get update && sudo apt-get install -y libuv1-dev
     - name: Setup Scala
-      uses: actions/setup-java@v3.12.0
+      uses: actions/setup-java@v3.13.0
       with:
-        distribution: temurin
-        java-version: '8'
+        distribution: corretto
+        java-version: '17'
         check-latest: true
     - name: Cache Dependencies
       uses: coursier/cache-action@v6
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 9d9dba2..f31974e 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,4 +1,4 @@
-val zioSbtVersion = "0.4.0-alpha.17"
+val zioSbtVersion = "0.4.0-alpha.21"
 
 addSbtPlugin("dev.zio" % "zio-sbt-ecosystem" % zioSbtVersion)
 addSbtPlugin("dev.zio" % "zio-sbt-ci"        % zioSbtVersion)