diff --git a/installers/30-deploy-mgmt-cluster.sh b/installers/30-deploy-mgmt-cluster.sh
index a1e3986..825b23b 100755
--- a/installers/30-deploy-mgmt-cluster.sh
+++ b/installers/30-deploy-mgmt-cluster.sh
@@ -119,6 +119,11 @@
   # Replace the OSM Docker tag in the WF templates
   find "${SW_CATALOGS_REPO_DIR}/infra-configs/osm-workflows/templates/wf-templates/building-blocks" -type f -name "*.yaml" -exec sed -i "s|opensourcemano/osm-krm-functions:releaseeighteen-daily|${DOCKER_REGISTRY_URL}${DOCKER_USER}/osm-krm-functions:${OSM_DOCKER_TAG}|g" {} +
 fi
+if [ -n "${MGMT_CLUSTER_CA_FILE}" ]; then
+  # Update secret-template for Flux bootstrap to add CA file
+  echo "data:" >> "${SW_CATALOGS_REPO_DIR}/cloud-resources/flux-remote-bootstrap/bootstrap/manifests/secret/secret-template.yaml"
+  echo "  ca.crt: $(base64 -w 0 "${MGMT_CLUSTER_CA_FILE}")" >> "${SW_CATALOGS_REPO_DIR}/cloud-resources/flux-remote-bootstrap/bootstrap/manifests/secret/secret-template.yaml"
+fi
 
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