diff --git a/.github/workflows/reusable-build-test-release.yml b/.github/workflows/reusable-build-test-release.yml
index 320c761b4..abc58eaec 100644
--- a/.github/workflows/reusable-build-test-release.yml
+++ b/.github/workflows/reusable-build-test-release.yml
@@ -23,7 +23,7 @@ on:
         required: false
         description: "branch for k8s manifests to run the tests on"
         type: string
-        default: "v3.0.2"
+        default: "v3.0.3"
       scripted-inputs-os-list:
         required: false
         description: "list of OS used for scripted input tests"
@@ -182,9 +182,9 @@ jobs:
   meta:
     runs-on: ubuntu-latest
     outputs:
+      matrix_supportedSplunk: ${{ steps.matrix.outputs.supportedSplunk }}
       matrix_latestSplunk: ${{ steps.matrix.outputs.latestSplunk }}
       matrix_supportedSC4S: ${{ steps.matrix.outputs.supportedSC4S }}
-      matrix_combinedSplunkversion: ${{ steps.combined_Splunkmatrix.outputs.combinedSplunkversions }}
       matrix_supportedModinputFunctionalVendors: ${{ steps.matrix.outputs.supportedModinputFunctionalVendors }}
       matrix_supportedUIVendors: ${{ steps.matrix.outputs.supportedUIVendors }}
     permissions:
@@ -196,13 +196,7 @@ jobs:
           submodules: false
           persist-credentials: false
       - id: matrix
-        uses: splunk/addonfactory-test-matrix-action@v2.0.2
-      - name: Combined Splunk and SC4S Versions
-        id: combined_Splunkmatrix
-        run: |
-          splunk='{"version":"unreleased-python3_9-f8b1a92a256b", "build":"7027496d63d8", "islatest":false, "isoldest":false}'
-          combinedSplunkversions=$(echo '${{ steps.matrix.outputs.supportedSplunk }}' | jq --argjson A "$splunk" '. + [$A]')
-          echo "combinedSplunkversions=$(echo "$combinedSplunkversions" | jq -c .)" >> "$GITHUB_OUTPUT"
+        uses: splunk/addonfactory-test-matrix-action@v2.1
 
   fossa-scan:
     runs-on: ubuntu-latest
@@ -928,7 +922,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        splunk: ${{ fromJson(needs.meta.outputs.matrix_combinedSplunkversion) }}
+        splunk: ${{ fromJson(needs.meta.outputs.matrix_supportedSplunk) }}
         sc4s: ${{ fromJson(needs.meta.outputs.matrix_supportedSC4S) }}
 
     container:
@@ -1161,7 +1155,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        splunk: ${{ fromJson(needs.meta.outputs.matrix_combinedSplunkversion) }}
+        splunk: ${{ fromJson(needs.meta.outputs.matrix_supportedSplunk) }}
         sc4s: ${{ fromJson(needs.meta.outputs.matrix_supportedSC4S) }}
 
     container:
@@ -1372,7 +1366,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        splunk: ${{ fromJson(needs.meta.outputs.matrix_combinedSplunkversion) }}
+        splunk: ${{ fromJson(needs.meta.outputs.matrix_supportedSplunk) }}
         browser: [ "chrome" ]
         vendor-version: ${{ fromJson(needs.meta.outputs.matrix_supportedUIVendors) }}
         marker: ${{ fromJson(inputs.ui_marker) }}
@@ -1605,7 +1599,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        splunk: ${{ fromJson(needs.meta.outputs.matrix_combinedSplunkversion) }}
+        splunk: ${{ fromJson(needs.meta.outputs.matrix_supportedSplunk) }}
         modinput-type: [ "modinput_functional" ]
         vendor-version: ${{ fromJson(needs.meta.outputs.matrix_supportedModinputFunctionalVendors) }}
         marker: ${{ fromJson(inputs.marker) }}
@@ -1836,7 +1830,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        splunk: ${{ fromJson(needs.meta.outputs.matrix_combinedSplunkversion) }}
+        splunk: ${{ fromJson(needs.meta.outputs.matrix_supportedSplunk) }}
         os: ${{ fromJson(inputs.scripted-inputs-os-list) }}
     container:
       image: ghcr.io/splunk/workflow-engine-base:4.1.0