diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 92642aa4..3a66e5da 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,32 +24,21 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         scala: [2.12.15, 2.13.8]
-        java: [temurin@11]
+        java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
-      - name: Setup Java (temurin@11)
-        if: matrix.java == 'temurin@11'
-        uses: actions/setup-java@v2
+      - name: Setup Java (temurin@8)
+        if: matrix.java == 'temurin@8'
+        uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: 11
-
-      - name: Cache sbt
-        uses: actions/cache@v2
-        with:
-          path: |
-            ~/.sbt
-            ~/.ivy2/cache
-            ~/.coursier/cache/v1
-            ~/.cache/coursier/v1
-            ~/AppData/Local/Coursier/Cache/v1
-            ~/Library/Caches/Coursier/v1
-          key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
+          java-version: 8
+          cache: sbt
 
       - name: Setup Ruby
         if: matrix.scala == '2.13.8'
@@ -64,12 +53,12 @@ jobs:
           gem install jekyll -v 3.2.1
 
       - name: Check that workflows are up to date
-        run: sbt ++${{ matrix.scala }} githubWorkflowCheck
+        run: sbt '++ ${{ matrix.scala }}' githubWorkflowCheck
 
-      - run: sbt ++${{ matrix.scala }} test mimaReportBinaryIssues
+      - run: sbt '++ ${{ matrix.scala }}' test mimaReportBinaryIssues
 
       - if: matrix.scala == '2.13.8'
-        run: sbt ++${{ matrix.scala }} docs/makeMicrosite
+        run: sbt '++ ${{ matrix.scala }}' docs/makeMicrosite
 
   publish:
     name: Publish Artifacts
@@ -79,32 +68,21 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         scala: [2.13.8]
-        java: [temurin@11]
+        java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
-      - name: Setup Java (temurin@11)
-        if: matrix.java == 'temurin@11'
-        uses: actions/setup-java@v2
+      - name: Setup Java (temurin@8)
+        if: matrix.java == 'temurin@8'
+        uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: 11
-
-      - name: Cache sbt
-        uses: actions/cache@v2
-        with:
-          path: |
-            ~/.sbt
-            ~/.ivy2/cache
-            ~/.coursier/cache/v1
-            ~/.cache/coursier/v1
-            ~/AppData/Local/Coursier/Cache/v1
-            ~/Library/Caches/Coursier/v1
-          key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
+          java-version: 8
+          cache: sbt
 
       - uses: olafurpg/setup-gpg@v3
 
@@ -124,7 +102,7 @@ jobs:
           PGP_SECRET: ${{ secrets.PGP_SECRET }}
           SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
           SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
-        run: sbt ++${{ matrix.scala }} ci-release
+        run: sbt ci-release
 
       - name: Publish microsite
-        run: sbt ++${{ matrix.scala }} ++2.13.8 docs/publishMicrosite
+        run: sbt ++2.13.8 docs/publishMicrosite
diff --git a/.github/workflows/clean.yml b/.github/workflows/clean.yml
index 547aaa43..bfc865d5 100644
--- a/.github/workflows/clean.yml
+++ b/.github/workflows/clean.yml
@@ -17,6 +17,7 @@ jobs:
       GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
       - name: Delete artifacts
+        shell: bash {0}
         run: |
           # Customize those three lines with your repository and credentials:
           REPO=${GITHUB_API_URL}/repos/${{ github.repository }}
@@ -25,7 +26,7 @@ jobs:
           ghapi() { curl --silent --location --user _:$GITHUB_TOKEN "$@"; }
 
           # A temporary file which receives HTTP response headers.
-          TMPFILE=/tmp/tmp.$$
+          TMPFILE=$(mktemp)
 
           # An associative array, key: artifact name, value: number of artifacts of that name.
           declare -A ARTCOUNT
diff --git a/project/plugins.sbt b/project/plugins.sbt
index a7fa1f1b..70aa7e4c 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -7,5 +7,5 @@ addSbtPlugin("com.typesafe"              % "sbt-mima-plugin"          % "1.1.0")
 addSbtPlugin("org.portable-scala"        % "sbt-scalajs-crossproject" % "1.2.0")
 addSbtPlugin("io.chrisdavenport"         % "sbt-mima-version-check"   % "0.1.2")
 addSbtPlugin("com.github.sbt"            % "sbt-ci-release"           % "1.5.10")
-addSbtPlugin("com.codecommit"            % "sbt-github-actions"       % "0.14.2")
+addSbtPlugin("com.github.sbt"            % "sbt-github-actions"       % "0.22.0")
 addSbtPlugin("org.scalameta"             % "sbt-mdoc"                 % "2.3.2")