diff --git a/security/cert_manager_operator/cert-manager-operator-release-notes.adoc b/security/cert_manager_operator/cert-manager-operator-release-notes.adoc
index 4864ede59e..63a0fe5dbf 100644
--- a/security/cert_manager_operator/cert-manager-operator-release-notes.adoc
+++ b/security/cert_manager_operator/cert-manager-operator-release-notes.adoc
@@ -12,6 +12,36 @@ These release notes track the development of {cert-manager-operator}.
 
 For more information, see xref:../../security/cert_manager_operator/index.adoc#cert-manager-operator-about[About the {cert-manager-operator}].
 
+[id="cert-manager-operator-release-notes-1-15-1_{context}"]
+== {cert-manager-operator} 1.15.1
+
+Issued: 2025-03-13
+
+The following advisories are available for the {cert-manager-operator} 1.15.1:
+
+* link:https://gitlab.cee.redhat.com/releng/advisories/-/blob/main/data/advisories/cert-manager-oape-tenant/2025/2733/advisory.yaml[RHEA-Advisory-2733]
+* link:https://gitlab.cee.redhat.com/releng/advisories/-/blob/main/data/advisories/cert-manager-oape-tenant/2025/2780/advisory.yaml[RHEA-Advisory-2780]
+* link:https://gitlab.cee.redhat.com/releng/advisories/-/blob/main/data/advisories/cert-manager-oape-tenant/2025/2821/advisory.yaml[RHEA-Advisory-2821]
+* link:https://gitlab.cee.redhat.com/releng/advisories/-/blob/main/data/advisories/cert-manager-oape-tenant/2025/2828/advisory.yaml[RHEA-Advisory-2828]
+
+Version `1.15.1` of the {cert-manager-operator} is based on the upstream cert-manager version `v1.15.5`. For more information, see the link:https://cert-manager.io/docs/releases/release-notes/release-notes-1.15/#v1155[cert-manager project release notes for v1.15.5].
+
+[id="cert-manager-operator-1-15-1-features-enhancements_{context}"]
+=== New features and enhancements
+
+*Integrating the {cert-manager-operator} with Istio-CSR* (Technology Preview)
+
+The {cert-manager-operator} now supports the Istio-CSR. With this integration, cert-manager Operator's issuers can issue, sign, and renew certificates for mutual TLS (mTLS) communication. {SMProductName} and `Istio` can now request these certificates directly from the cert-manager Operator.
+
+For more information, see xref:../../security/cert_manager_operator/cert-manager-operator-integrating-istio.adoc#cert-manager-operator-istio-csr-installing_cert-manager-operator-integrating-istio[Integrating the cert-manager Operator with Istio-CSR].
+
+[id="cert-manager-operator-1-15-1-CVEs_{context}"]
+=== CVEs
+
+* link:https://access.redhat.com/security/cve/CVE-2024-9287[CVE-2024-9287]
+* link:https://github.com/advisories/GHSA-7wrw-r4p8-38rx[CVE-2024-45336]
+* link:https://github.com/advisories/GHSA-3f6r-qh9c-x6mm[CVE-2024-45341]
+
 [id="cert-manager-operator-release-notes-1-15-0_{context}"]
 == {cert-manager-operator} 1.15.0