diff --git a/.github/actions/SetupEnvironment/action.yml b/.github/actions/SetupEnvironment/action.yml
index ce37f616..5b4258a2 100644
--- a/.github/actions/SetupEnvironment/action.yml
+++ b/.github/actions/SetupEnvironment/action.yml
@@ -6,7 +6,7 @@ runs:
 
   steps:
     - name: 🐍 Setup Mambaforge
-      uses: conda-incubator/setup-miniconda@v3
+      uses: conda-incubator/setup-miniconda@v4
       with:
         miniforge-version: latest
 #        miniforge-variant: Mambaforge
@@ -14,7 +14,7 @@ runs:
         activate-environment: hypercp
 
     - name: 🔂 Cache Environment
-      uses: actions/cache@v4
+      uses: actions/cache@v6
       with:
         path: ${{ env.CONDA }}/envs
         key:
diff --git a/.github/workflows/ApplicationTesting.yml b/.github/workflows/ApplicationTesting.yml
index 9191a150..30e72b77 100644
--- a/.github/workflows/ApplicationTesting.yml
+++ b/.github/workflows/ApplicationTesting.yml
@@ -18,13 +18,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ 'ubuntu-latest', 'macos-latest', 'windows-latest' ]
+        os: [ 'ubuntu-latest'  , 'macos-latest', 'windows-latest' ]
 
     steps:
       - name: ⏬ Checkout repository
-        uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.branch }}
+        uses: actions/checkout@v7
 
       - name: 🔧 Setup Environment
         uses: ./.github/actions/SetupEnvironment
@@ -33,15 +31,22 @@ jobs:
         env:
           CDSAPIRC: ${{ secrets.ECMWF_ADS_CREDENTIALS }}
         run: |
-          echo "$CDSAPIRC" >> ~/.ecmwf_ads_credentials.json
+          echo "$CDSAPIRC" > ~/.ecmwf_ads_credentials.json
 
       - name: 🔑 Get GMAO MERRA2 Credentials
         env:
           NETRC: ${{ secrets.NETRC }}
         run: |
-          echo "$NETRC" >> ~/.netrc
+          echo "$NETRC" > ~/.netrc
+          chmod 600 "$HOME/.netrc"
+
+      - name: Disable IPv6 for EarthData access on Linux
+        if: runner.os == 'Linux'
+        run: |
+          sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1
+          sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1
 
       - name: 🧪 Run Tests
         run: |
           python -m unittest Tests.test_filing
-          python -m unittest Tests.test_sample_data 
+          python -m unittest Tests.test_sample_data
diff --git a/.github/workflows/Build.yml b/.github/workflows/Build.yml
index 02efd566..820ad9cd 100644
--- a/.github/workflows/Build.yml
+++ b/.github/workflows/Build.yml
@@ -25,9 +25,7 @@ jobs:
 
     steps:
       - name: ⏬ Checkout repository
-        uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.branch }}
+        uses: actions/checkout@v7
 
       - name: 🔧 Setup Environment
         uses: ./.github/actions/SetupEnvironment
@@ -46,9 +44,10 @@ jobs:
           filename: '${{ env.BUNDLE_NAME }}.zip'
 
       - name: ⏫️ Upload Bundle
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ${{ env.BUNDLE_NAME }}
           path: Bundled/dist/${{ env.BUNDLE_NAME }}.zip
           compression-level: 0
+          if-no-files-found: error
           # Double zip as need zip for release page (ideally want to prevent unzip from download artifact)
diff --git a/.github/workflows/Pipeline.yml b/.github/workflows/Pipeline.yml
index bb7db0cc..c5baeec0 100644
--- a/.github/workflows/Pipeline.yml
+++ b/.github/workflows/Pipeline.yml
@@ -30,7 +30,7 @@ jobs:
     steps:
       - name: Delete Artifact
         if: startsWith(github.ref, 'refs/heads/master') || startsWith(github.ref, 'refs/tags')
-        uses: geekyeggo/delete-artifact@v4
+        uses: geekyeggo/delete-artifact@v6
         with:
           name: ${{ needs.Build.outputs.files }}
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/Release.yml b/.github/workflows/Release.yml
index eefe756b..f389bb1e 100644
--- a/.github/workflows/Release.yml
+++ b/.github/workflows/Release.yml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Download All Artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           merge-multiple: True
 
@@ -40,7 +40,7 @@ jobs:
           echo "EOF" >> $GITHUB_OUTPUT
 
       - name: Create Release Page
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@v3
         with:
           files: ${{ steps.get_variables.outputs.artifacts }}
           body: |