diff --git a/.github/workflows/functional_test.yaml b/.github/workflows/functional_test.yaml
index da585c739b..729c64c288 100644
--- a/.github/workflows/functional_test.yaml
+++ b/.github/workflows/functional_test.yaml
@@ -5,7 +5,7 @@ on:
 
 jobs:
   functional-test:
-    name: Kubernetes ${{ matrix.kubernetes_version }} ${{ matrix.container_runtime }}
+    name: K8s ${{ matrix.kubernetes_version }} ${{ matrix.container_runtime }}, Splunk ${{ matrix.splunk_version }}
     runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
@@ -24,6 +24,9 @@ jobs:
           - "docker"
           - "containerd"
           - "cri-o"
+        splunk_version:
+          - 9.3.0
+          - 8.2.9
     env:
       CI_SPLUNK_PORT: 8089
       CI_SPLUNK_USERNAME: admin
@@ -33,6 +36,7 @@ jobs:
       CI_INDEX_METRICS: ci_metrics
       CONTAINER_RUNTIME: ${{ matrix.container_runtime }}
       KUBERNETES_VERSION: ${{ matrix.kubernetes_version }}
+      SPLUNK_VERSION: ${{ matrix.splunk_version }}
       MINIKUBE_VERSION: latest
 
     steps:
@@ -70,6 +74,11 @@ jobs:
           until kubectl -n default get serviceaccount default -o name; do
             sleep 1;
           done
+          # set splunk version, hec_token, splunk password in k8s-splunk.yaml file
+          sed -i "s/splunk:9.3.0/splunk:${SPLUNK_VERSION}/g" ci_scripts/k8s-splunk.yml
+          sed -i "s/value: helloworld/value: ${CI_SPLUNK_PASSWORD}/g" ci_scripts/k8s-splunk.yml
+          sed -i "s/value: 00000000-0000-0000-0000-0000000000000/value: ${CI_SPLUNK_HEC_TOKEN}/g" ci_scripts/k8s-splunk.yml
+          cat ci_scripts/k8s-splunk.yml
           # Install Splunk on minikube
           kubectl apply -f ci_scripts/k8s-splunk.yml
           # Wait until splunk is ready
diff --git a/ci_scripts/k8s-splunk.yml b/ci_scripts/k8s-splunk.yml
index 3cd697ea5f..0287fcf1f0 100644
--- a/ci_scripts/k8s-splunk.yml
+++ b/ci_scripts/k8s-splunk.yml
@@ -60,7 +60,7 @@ spec:
     runAsGroup: 0
   containers:
     - name: splunk
-      image: docker.io/splunk/splunk:8.2.0
+      image: docker.io/splunk/splunk:9.3.0
       ports:
         - name: web-interface
           containerPort: 8000