diff --git a/README.md b/README.md
index 5e577154139fb092c6d23f34bf47869d5dfe1799..1b8fad50ae180d6166c9ca299360b2109840a31e 100644
--- a/README.md
+++ b/README.md
@@ -177,7 +177,7 @@ Note: Upstart/SysV init based OS types are not supported.
   - [weave](https://github.com/weaveworks/weave) v2.8.1
   - [kube-vip](https://github.com/kube-vip/kube-vip) v0.5.12
 - Application
-  - [cert-manager](https://github.com/jetstack/cert-manager) v1.12.5
+  - [cert-manager](https://github.com/jetstack/cert-manager) v1.12.6
   - [coredns](https://github.com/coredns/coredns) v1.10.1
   - [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v1.9.4
   - [krew](https://github.com/kubernetes-sigs/krew) v0.4.4
diff --git a/roles/download/defaults/main/main.yml b/roles/download/defaults/main/main.yml
index 0868270761f6017d4fb0ca348ab31e425262f67e..ed2bb776b6ad783d48dc02b6746dae8cca0784b0 100644
--- a/roles/download/defaults/main/main.yml
+++ b/roles/download/defaults/main/main.yml
@@ -313,7 +313,7 @@ ingress_nginx_kube_webhook_certgen_image_repo: "{{ kube_image_repo }}/ingress-ng
 ingress_nginx_kube_webhook_certgen_image_tag: "v20231011-8b53cabe0"
 alb_ingress_image_repo: "{{ docker_image_repo }}/amazon/aws-alb-ingress-controller"
 alb_ingress_image_tag: "v1.1.9"
-cert_manager_version: "v1.12.5"
+cert_manager_version: "v1.12.6"
 cert_manager_controller_image_repo: "{{ quay_image_repo }}/jetstack/cert-manager-controller"
 cert_manager_controller_image_tag: "{{ cert_manager_version }}"
 cert_manager_cainjector_image_repo: "{{ quay_image_repo }}/jetstack/cert-manager-cainjector"