diff --git a/.github/workflows/nebula-ci.yml b/.github/workflows/nebula-ci.yml
index c1e21d149..a23a77556 100644
--- a/.github/workflows/nebula-ci.yml
+++ b/.github/workflows/nebula-ci.yml
@@ -20,13 +20,15 @@ jobs:
         run: |
           git config --global user.name "Mantis OSS Maintainers"
           git config --global user.email "mantis-oss-dev@googlegroups.com"
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Setup jdk
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v5
+          with:
+            distribution: temurin  # Added for actions/setup-java v2+ compatibility
         with:
           java-version: ${{ matrix.java }}
       - name: Gradle Cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         id: gradle-cache
         with:
           path: ~/.gradle/caches
@@ -34,7 +36,7 @@ jobs:
           restore-keys: |
             - ${{ runner.os }}-gradle-
       - name: Gradle Wrapper Cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         id: gradle-wrapper-cache
         with:
           path: ~/.gradle/wrapper
@@ -50,7 +52,7 @@ jobs:
           CI_BRANCH: ${{ github.ref }}
           COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Upload Test Results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         if: always()
         with:
           name: Unit Test Results
@@ -61,7 +63,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Upload
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: Event File
           path: ${{ github.event_path }}
diff --git a/.github/workflows/nebula-publish.yml b/.github/workflows/nebula-publish.yml
index 796a4ed39..235d0c112 100644
--- a/.github/workflows/nebula-publish.yml
+++ b/.github/workflows/nebula-publish.yml
@@ -16,9 +16,9 @@ jobs:
         run: |
           git config --global user.name "Mantis OSS Maintainers"
           git config --global user.email "mantis-oss-dev@googlegroups.com"
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Setup jdk
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v5
         with:
           java-version: 17
           distribution: 'zulu'
diff --git a/.github/workflows/nebula-snapshot.yml b/.github/workflows/nebula-snapshot.yml
index a35d60fa3..30d04190b 100644
--- a/.github/workflows/nebula-snapshot.yml
+++ b/.github/workflows/nebula-snapshot.yml
@@ -20,11 +20,11 @@ jobs:
           git config --global user.name "Mantis OSS Maintainers"
           git config --global user.email "mantis-oss-dev@googlegroups.com"
       - name: Checkout PR
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Setup jdk
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v5
         with:
           java-version: 17
           distribution: 'zulu'
diff --git a/.github/workflows/push-docker-image.yml b/.github/workflows/push-docker-image.yml
index 73b7e712c..66b1b46ad 100644
--- a/.github/workflows/push-docker-image.yml
+++ b/.github/workflows/push-docker-image.yml
@@ -44,9 +44,11 @@ jobs:
           git config --global user.name "Mantis OSS Maintainers"
           git config --global user.email "mantis-oss-dev@googlegroups.com"
       - name: Checkout PR
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup jdk
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v5
+          with:
+            distribution: temurin  # Added for actions/setup-java v2+ compatibility
         with:
           java-version: 17
 
@@ -92,7 +94,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
 
       - name: Cache Docker layers
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}