diff --git a/.github/workflows/gradle-wrapper-validation.yml b/.github/workflows/gradle-wrapper-validation.yml
deleted file mode 100644
index 6794cfb..0000000
--- a/.github/workflows/gradle-wrapper-validation.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-name: "Validate Gradle Wrapper"
-on: [push, pull_request]
-
-jobs:
-  validation:
-    name: "Validation"
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - uses: gradle/actions/wrapper-validation@f29f5a9d7b09a7c6b29859002d29d24e1674c884 # v5.0.1
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index bb6e3d4..c7ffa70 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,9 +20,10 @@ jobs:
       - name: Set up JDK 11
         uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
         with:
-          distribution: 'zulu'
-          java-version: 11
-          cache: 'gradle'
+          distribution: 'temurin'
+          java-version: 17
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@0723195856401067f7a2779048b490ace7a47d7c # v5.0.2
       - name: Build User Guide
         run: ./gradlew asciidoctor
       - name: Upload User Guide Artifact