diff --git a/.github/workflows/cache-config-tests.yml b/.github/workflows/cache-config-tests.yml
index f5ad388501..e059536a3e 100644
--- a/.github/workflows/cache-config-tests.yml
+++ b/.github/workflows/cache-config-tests.yml
@@ -88,7 +88,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.x86_64.rpm
@@ -106,7 +106,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/trafficcontrol-${{ github.job }}-*.x86_64.rpm
@@ -141,7 +141,7 @@ jobs:
           actual_rpm_name="$(ls dist | grep -E '^trafficserver-[0-9.]+-[0-9]+\.[0-9a-f]+.el${{ env.RHEL_VERSION }}.${{ env.TARGET_ARCH }}.rpm$')"
           [[ "${{ steps.repo-info.outputs.expected-rpm-name }}" == "$actual_rpm_name" ]]
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.x86_64.rpm
@@ -158,17 +158,17 @@ jobs:
     - name: Checkout
       uses: actions/checkout@master
     - name: Download TO RPM
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: traffic_ops
         path: ${{ github.workspace }}/cache-config/testing/docker/traffic_ops
     - name: Download Cache Config RPM
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: cache-config
         path: ${{ github.workspace }}/cache-config/testing/docker/ort_test
     - name: Download ATS RPM
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: trafficserver
         path: ${{ github.workspace }}/cache-config/testing/docker/yumserver/test-rpms
diff --git a/.github/workflows/ciab.yaml b/.github/workflows/ciab.yaml
index 39c6bee04c..c522f62a25 100644
--- a/.github/workflows/ciab.yaml
+++ b/.github/workflows/ciab.yaml
@@ -101,7 +101,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.rpm
@@ -119,7 +119,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.rpm
@@ -137,7 +137,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/trafficcontrol-${{ github.job }}-*.rpm
@@ -162,7 +162,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.rpm
@@ -210,7 +210,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/*.rpm
@@ -228,7 +228,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.rpm
@@ -246,7 +246,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.rpm
@@ -264,7 +264,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.rpm
@@ -282,7 +282,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.rpm
@@ -317,7 +317,7 @@ jobs:
           actual_rpm_name="$(ls dist | grep -E '^trafficserver-[0-9.]+-[0-9]+\.[0-9a-f]+.el${{ env.RHEL_VERSION }}.${{ env.TARGET_ARCH }}.rpm$')"
           [[ "${{ steps.repo-info.outputs.expected-rpm-name }}" == "$actual_rpm_name" ]]
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.x86_64.rpm
@@ -348,7 +348,7 @@ jobs:
       - name: Import cached Alpine Docker image
         run: .github/actions/save-alpine-tar/entrypoint.sh load ${{ env.ALPINE_VERSION }}
       - name: Download RPMs
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           path: ${{ github.workspace }}/dist/
       - name: Build CDN-in-a-Box images
@@ -356,7 +356,7 @@ jobs:
       - name: Start CDN-in-a-Box
         uses: ./.github/actions/run-ciab
       - name: Upload CDN-in-a-Box logs
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ciab-logs
           path: infrastructure/cdn-in-a-box/logs/*.log
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index eb162e8567..779f5c82f5 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -49,7 +49,7 @@ jobs:
         with:
           docs-folder: "docs/"
           pre-build-command: "apt-get install -y pandoc"
-      - uses: actions/upload-artifact@v1
+      - uses: actions/upload-artifact@v4
         with:
           name: HTMLDocumentation
           path: docs/build/html/
diff --git a/.github/workflows/health-client-tests.yml b/.github/workflows/health-client-tests.yml
index b1662194fb..0fa0a2d541 100644
--- a/.github/workflows/health-client-tests.yml
+++ b/.github/workflows/health-client-tests.yml
@@ -82,7 +82,7 @@ jobs:
         env:
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.x86_64.rpm
@@ -101,7 +101,7 @@ jobs:
           NO_SOURCE: 1
           ATC_COMPONENT: ${{ github.job }}
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/trafficcontrol-health-client-*.x86_64.rpm
@@ -136,7 +136,7 @@ jobs:
           actual_rpm_name="$(ls dist | grep -E '^trafficserver-[0-9.]+-[0-9]+\.[0-9a-f]+.el${{ env.RHEL_VERSION }}.${{ env.TARGET_ARCH }}.rpm$')"
           [[ "${{ steps.repo-info.outputs.expected-rpm-name }}" == "$actual_rpm_name" ]]
       - name: Upload RPM
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.job }}
           path: ${{ github.workspace }}/dist/${{ github.job }}-*.x86_64.rpm
@@ -153,17 +153,17 @@ jobs:
     - name: Checkout
       uses: actions/checkout@master
     - name: Download TO RPM
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: traffic_ops
         path: ${{ github.workspace }}/tc-health-client/testing/docker/traffic_ops
     - name: Download Health Client RPM
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: tc-health-client
         path: ${{ github.workspace }}/tc-health-client/testing/docker/health-check-test
     - name: Download ATS RPM
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: trafficserver
         path: ${{ github.workspace }}/tc-health-client/testing/docker/health-check-test
diff --git a/.github/workflows/to.api.contract.tests.yml b/.github/workflows/to.api.contract.tests.yml
index a709289967..043229de24 100644
--- a/.github/workflows/to.api.contract.tests.yml
+++ b/.github/workflows/to.api.contract.tests.yml
@@ -105,13 +105,13 @@ jobs:
         version: 4
     - name: Upload Vault logs
       if: ${{ steps.v4Tests.outcome != 'success' && always() }}
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: v4 Traffic Vault logs
         path: ${{ github.workspace }}/infrastructure/cdn-in-a-box/traffic.vault.logs
     - name: Upload Ops logs
       if: ${{ steps.v4Tests.outcome != 'success' && always() }}
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: v4 Traffic Ops logs
         path: ${{ github.workspace }}/traffic_ops/traffic_ops_golang/traffic.ops.log
diff --git a/.github/workflows/to.integration.tests.yml b/.github/workflows/to.integration.tests.yml
index 2be60a5f1c..8cfd89207b 100644
--- a/.github/workflows/to.integration.tests.yml
+++ b/.github/workflows/to.integration.tests.yml
@@ -123,13 +123,13 @@ jobs:
         flags: traffic_ops_integration,v3
     - name: Upload v3 Vault logs
       if: ${{ steps.v3Tests.outcome != 'success' && always() }}
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: v3 Traffic Vault logs
         path: ${{ github.workspace }}/infrastructure/cdn-in-a-box/traffic.vault.logs
     - name: Upload v3 Ops logs
       if: ${{ steps.v3Tests.outcome != 'success' && always() }}
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: v3 Traffic Ops logs
         path: ${{ github.workspace }}/traffic_ops/traffic_ops_golang/traffic.ops.log
@@ -200,13 +200,13 @@ jobs:
         flags: traffic_ops_integration,v4
     - name: Upload v4 Vault logs
       if: ${{ steps.v4Tests.outcome != 'success' && always() }}
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: v4 Traffic Vault logs
         path: ${{ github.workspace }}/infrastructure/cdn-in-a-box/traffic.vault.logs
     - name: Upload v4 Ops logs
       if: ${{ steps.v4Tests.outcome != 'success' && always() }}
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: v4 Traffic Ops logs
         path: ${{ github.workspace }}/traffic_ops/traffic_ops_golang/traffic.ops.log
@@ -279,13 +279,13 @@ jobs:
         flags: traffic_ops_integration,v5
     - name: Upload v5 Vault logs
       if: ${{ steps.v5Tests.outcome != 'success' && always() }}
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: v5 Traffic Vault logs
         path: ${{ github.workspace }}/infrastructure/cdn-in-a-box/traffic.vault.logs
     - name: Upload v5 Ops logs
       if: ${{ steps.v5Tests.outcome != 'success' && always() }}
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: v5 Traffic Ops logs
         path: ${{ github.workspace }}/traffic_ops/traffic_ops_golang/traffic.ops.log
diff --git a/.github/workflows/tp.integration.tests.yml b/.github/workflows/tp.integration.tests.yml
index 17fb097fac..b6ce0d8daf 100644
--- a/.github/workflows/tp.integration.tests.yml
+++ b/.github/workflows/tp.integration.tests.yml
@@ -165,7 +165,7 @@ jobs:
         with:
           smtp_address: 172.17.0.1
       - name: Upload Report
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: ${{ github.job }}
diff --git a/.github/workflows/tpv2.yml b/.github/workflows/tpv2.yml
index 57c156abfe..5796044f36 100644
--- a/.github/workflows/tpv2.yml
+++ b/.github/workflows/tpv2.yml
@@ -30,7 +30,6 @@ on:
       - '!**_test.go'
       - traffic_ops/app/db/**
       - traffic_ops/traffic_ops_golang/**.go
-  create:
   pull_request:
     paths:
       - experimental/traffic-portal/**
@@ -261,7 +260,7 @@ jobs:
       - name: Run everything and test
         uses: ./.github/actions/tpv2-integration-tests
       - name: Upload Report
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: ${{ github.job }}
diff --git a/.github/workflows/tr-ultimate-test-harness.yml b/.github/workflows/tr-ultimate-test-harness.yml
index 5dbb842193..50851f48a4 100644
--- a/.github/workflows/tr-ultimate-test-harness.yml
+++ b/.github/workflows/tr-ultimate-test-harness.yml
@@ -207,7 +207,7 @@ jobs:
           done
         if: ${{ failure() }}
       - name: Upload Dev CDN-in-a-Box logs
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: dev-ciab-logs
           path: dev/logs/*.log
diff --git a/.github/workflows/tr.tests.yaml b/.github/workflows/tr.tests.yaml
index b04a7b6443..38bf66cc21 100644
--- a/.github/workflows/tr.tests.yaml
+++ b/.github/workflows/tr.tests.yaml
@@ -66,7 +66,7 @@ jobs:
           files: core/target/site/jacoco-aggregate/jacoco.xml
           flags: traffic_router_unit
       - name: Upload Surefire and Failsafe Reports
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: ${{ failure() }}
         with:
           name: junit-reports