diff --git a/k8s-manifests/cert-manager/cert-manager.jsonnet b/k8s-manifests/cert-manager/cert-manager.jsonnet
index 93ac0a7..e3ded31 100644
--- a/k8s-manifests/cert-manager/cert-manager.jsonnet
+++ b/k8s-manifests/cert-manager/cert-manager.jsonnet
@@ -4,7 +4,7 @@ local app = import "../_templates/argocd_app.libsonnet";
 app + {
   chart:: "cert-manager",
   repo:: "https://charts.jetstack.io",
-  version:: "v1.8.*",
+  version:: "v1.9.*",
   values:: |||
     installCRDs: true
   |||