diff --git a/deploy/charts/cert-manager/README.template.md b/deploy/charts/cert-manager/README.template.md
index fd957211c..fcd4e61f4 100644
--- a/deploy/charts/cert-manager/README.template.md
+++ b/deploy/charts/cert-manager/README.template.md
@@ -8,7 +8,7 @@ to renew certificates at an appropriate time before expiry.
 
 ## Prerequisites
 
-- Kubernetes 1.16+
+- Kubernetes 1.18+
 
 ## Installing the Chart
 
@@ -99,7 +99,7 @@ The following table lists the configurable parameters of the cert-manager chart
 | `volumes` | Optional volumes for cert-manager | `[]` |
 | `volumeMounts` | Optional volume mounts for cert-manager | `[]` |
 | `resources` | CPU/memory resource requests/limits | `{}` |
-| `securityContext` | Optional security context. The yaml block should adhere to the [SecurityContext spec](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.16/#securitycontext-v1-core) | `{}` |
+| `securityContext` | Optional security context. The yaml block should adhere to the [SecurityContext spec](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.22/#securitycontext-v1-core) | `{}` |
 | `securityContext.enabled` | Deprecated (use `securityContext`) - Enable security context | `false` |
 | `containerSecurityContext` | Security context to be set on the controller component container | `{}` |
 | `nodeSelector` | Node labels for pod assignment | `{}` |