diff --git a/.github/workflows/pipelines-ci.yaml b/.github/workflows/pipelines-ci.yaml
new file mode 100644
index 00000000000..cb53de4a66a
--- /dev/null
+++ b/.github/workflows/pipelines-ci.yaml
@@ -0,0 +1,48 @@
+name: Openshift Pipelines CI
+
+on:
+  pull_request:
+    paths:
+      - 'components/pipeline-service/**/main-pipeline-service-configuration.yaml'
+      - 'components/pipeline-service/**/deploy.yaml'
+
+jobs:
+  validate-pipelines-index:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+      id-token: write
+    steps:
+      - name: Checkout pull request head
+        uses: actions/checkout@v5
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: head
+          sparse-checkout: components/pipeline-service
+
+      - name: Checkout pull request base
+        uses: actions/checkout@v5
+        with:
+          ref: ${{ github.event.pull_request.base.sha }}
+          path: base
+          sparse-checkout: components/pipeline-service
+
+      - name: Compare pipelines indexes
+        id: compare_indexes
+        run: head/components/pipeline-service/ci/check_bundle_is_upgrade.sh
+
+      - name: Comment warnings
+        if: ${{ steps.compare_indexes.outputs.comment != '' }}
+        uses: actions/github-script@v8
+        env:
+          MESSAGE: ${{steps.compare_indexes.outputs.comment}}
+        with:
+          script: |
+            const message = process.env.MESSAGE.replace(/\\n/g, "\n");
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: `Warnings found\n${message}`,
+            });
diff --git a/components/pipeline-service/ci/check_bundle_is_upgrade.sh b/components/pipeline-service/ci/check_bundle_is_upgrade.sh
new file mode 100755
index 00000000000..a15a89b8ea3
--- /dev/null
+++ b/components/pipeline-service/ci/check_bundle_is_upgrade.sh
@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+#
+# Compare the changed pipelines bundle index images in two copies of the
+# the repository: one at ./head and one at ./base.
+# Emits any warnings to stdout and $GITHUB_OUTPUT.
+
+# Easiest way to identify all nested deploy.yaml files
+shopt -s globstar
+
+function extract_index_catalog() {
+    IMAGE_REF="${1}"
+    CONTAINER=$(podman create "${IMAGE_REF}")
+    tmpdir=$(mktemp -d)
+    podman cp "${CONTAINER}:/configs/openshift-pipelines-operator-rh/catalog.json" "${tmpdir}"
+    podman container rm "${CONTAINER}" >/dev/null
+    cat "${tmpdir}/catalog.json"
+}
+
+export OUTPUT=""
+
+for f in head/components/pipeline-service/**/deploy.yaml; do
+    CONFIG=$(echo "${f}" | cut -d '/' -f2-)
+    NEW_CONFIG="${f}"
+    OLD_CONFIG="base/${CONFIG}"
+    if [[ ! -e "${OLD_CONFIG}" ]]; then
+        echo "No corresponding manifest found for ${CONFIG} in base revision. Either the cluster is new or this is a CI bug. Skipping..."
+        continue
+    fi
+
+    OLD_INDEX_IMAGE=$(yq 'select(.kind == "CatalogSource") | .spec.image' "${OLD_CONFIG}")
+    NEW_INDEX_IMAGE=$(yq 'select(.kind == "CatalogSource") | .spec.image' "${NEW_CONFIG}")
+
+    if [[ "${OLD_INDEX_IMAGE}" == "${NEW_INDEX_IMAGE}" ]]; then
+        echo "No change in index image for ${CONFIG}"
+        continue
+    fi
+
+
+    OLD_CATALOG=$(extract_index_catalog "${OLD_INDEX_IMAGE}")
+    NEW_CATALOG=$(extract_index_catalog "${NEW_INDEX_IMAGE}")
+
+    OLD_BUILD_VERSION=$(echo "${OLD_CATALOG}" | jq -r 'select(.name | startswith("openshift-pipelines-operator-rh.v5.0.5")) | .properties.[] | select(.type == "olm.package") | .value.version')
+    NEW_BUILD_VERSION=$(echo "${NEW_CATALOG}" | jq -r 'select(.name | startswith("openshift-pipelines-operator-rh.v5.0.5")) | .properties.[] | select(.type == "olm.package") | .value.version')
+
+    OLD_BUILD_ID=$(echo "${OLD_BUILD_VERSION}" | cut -d '-' -f2)
+    NEW_BUILD_ID=$(echo "${NEW_BUILD_VERSION}" | cut -d '-' -f2)
+
+    echo "Comparing old build ${OLD_BUILD_VERSION} (${OLD_BUILD_ID}) to new build ${NEW_BUILD_VERSION} (${NEW_BUILD_ID})"
+
+    if (( "${OLD_BUILD_ID}" >= "${NEW_BUILD_ID}" )); then
+        OUTPUT="${OUTPUT}- :warning: New index image in ${CONFIG} uses a package version (${NEW_BUILD_VERSION}) which is not higher than currently applied package version (${OLD_BUILD_VERSION}). When applied, operator might not upgrade to new index\n"
+        LINE_NUMBER=$(grep --line-number "image: ${NEW_INDEX_IMAGE}" "${NEW_CONFIG}" | cut -d ':' -f1)
+        echo "::warning file=${CONFIG},line=${LINE_NUMBER}::Index references bundle version ${NEW_BUILD_VERSION} which is not higher than previous bundle version ${OLD_BUILD_VERSION}"
+    fi
+
+done
+
+echo "comment=${OUTPUT}" | tee -a "${GITHUB_OUTPUT:-out}"
+
diff --git a/components/pipeline-service/staging/base/main-pipeline-service-configuration.yaml b/components/pipeline-service/staging/base/main-pipeline-service-configuration.yaml
index 8f39f097d1d..6a9b37c0c17 100644
--- a/components/pipeline-service/staging/base/main-pipeline-service-configuration.yaml
+++ b/components/pipeline-service/staging/base/main-pipeline-service-configuration.yaml
@@ -2070,7 +2070,7 @@ metadata:
   namespace: openshift-marketplace
 spec:
   displayName: custom-operators
-  image: quay.io/openshift-pipeline/pipelines-index-4.17@sha256:6c984e7de8a71c0291fe28c31234d144a6cc5658fdee43965b1e3aedc9600d80
+  image: quay.io/openshift-pipeline/pipelines-index-4.15@sha256:4bd52b1e88fd0fc15a90f61b4bbf6a09c5976986ae647db1c25851715e47e610
   sourceType: grpc
   updateStrategy:
     registryPoll:
diff --git a/components/pipeline-service/staging/stone-stage-p01/deploy.yaml b/components/pipeline-service/staging/stone-stage-p01/deploy.yaml
index 78a05e3f9a6..2d3eb8f9450 100644
--- a/components/pipeline-service/staging/stone-stage-p01/deploy.yaml
+++ b/components/pipeline-service/staging/stone-stage-p01/deploy.yaml
@@ -2656,7 +2656,7 @@ metadata:
   namespace: openshift-marketplace
 spec:
   displayName: custom-operators
-  image: quay.io/openshift-pipeline/pipelines-index-4.17@sha256:6c984e7de8a71c0291fe28c31234d144a6cc5658fdee43965b1e3aedc9600d80
+  image: quay.io/openshift-pipeline/pipelines-index-4.15@sha256:4bd52b1e88fd0fc15a90f61b4bbf6a09c5976986ae647db1c25851715e47e610
   sourceType: grpc
   updateStrategy:
     registryPoll:
diff --git a/components/pipeline-service/staging/stone-stg-rh01/deploy.yaml b/components/pipeline-service/staging/stone-stg-rh01/deploy.yaml
index 9284fda7f06..eae7383d2dd 100644
--- a/components/pipeline-service/staging/stone-stg-rh01/deploy.yaml
+++ b/components/pipeline-service/staging/stone-stg-rh01/deploy.yaml
@@ -2668,7 +2668,7 @@ metadata:
   namespace: openshift-marketplace
 spec:
   displayName: custom-operators
-  image: quay.io/openshift-pipeline/pipelines-index-4.17@sha256:6c984e7de8a71c0291fe28c31234d144a6cc5658fdee43965b1e3aedc9600d80
+  image: quay.io/openshift-pipeline/pipelines-index-4.15@sha256:4bd52b1e88fd0fc15a90f61b4bbf6a09c5976986ae647db1c25851715e47e610
   sourceType: grpc
   updateStrategy:
     registryPoll: