diff --git a/clusters/cl01tl/helm/cert-manager/Chart.lock b/clusters/cl01tl/helm/cert-manager/Chart.lock
index bd1cfdf31..4c2a5a3a1 100644
--- a/clusters/cl01tl/helm/cert-manager/Chart.lock
+++ b/clusters/cl01tl/helm/cert-manager/Chart.lock
@@ -1,6 +1,6 @@
 dependencies:
 - name: cert-manager
   repository: https://charts.jetstack.io
-  version: v1.19.4
-digest: sha256:5c4a0a0568677bfcf4529e6ec6a005957cd1820fd5f1d1f108e74370d409fe88
-generated: "2026-02-24T19:30:44.415585645Z"
+  version: v1.20.0
+digest: sha256:1543bd17649cb32982de3cce017fcbed1b44c41d50b76c6471b266f33e261c29
+generated: "2026-03-10T16:06:49.332999536Z"
diff --git a/clusters/cl01tl/helm/cert-manager/Chart.yaml b/clusters/cl01tl/helm/cert-manager/Chart.yaml
index 86c171e9d..4d0dd5311 100644
--- a/clusters/cl01tl/helm/cert-manager/Chart.yaml
+++ b/clusters/cl01tl/helm/cert-manager/Chart.yaml
@@ -14,7 +14,7 @@ maintainers:
   - name: alexlebens
 dependencies:
   - name: cert-manager
-    version: v1.19.4
+    version: v1.20.0
     repository: https://charts.jetstack.io
 icon: https://raw.githubusercontent.com/walkxcode/dashboard-icons/main/png/cert-manager.png
 # renovate: datasource=github-releases depName=cert-manager/cert-manager