diff --git a/cert-manager-issuers/letsencrypt/main.tf b/cert-manager-issuers/letsencrypt/main.tf
index 0fd6205..3e3d383 100644
--- a/cert-manager-issuers/letsencrypt/main.tf
+++ b/cert-manager-issuers/letsencrypt/main.tf
@@ -28,33 +28,23 @@ resource "kubernetes_secret" "letsencrypt_issuer_secret" {
   }
 }
 
-resource "kubernetes_manifest" "letsencrypt_issuer" {
-  manifest = {
-    apiVersion = "cert-manager.io/v1"
-    kind       = "ClusterIssuer"
-    metadata = {
-      name = var.name
-      labels = {
-        name = var.name
-      }
-    }
-    spec = {
-      acme = {
-        server = var.server
-        email  = var.email
-        privateKeySecretRef = {
-          name = kubernetes_secret.letsencrypt_issuer_secret.metadata.0.name
-        }
-        solvers = [
-          {
-            http01 = {
-              ingress = {
-                class = var.ingress_class
-              }
-            }
-          }
-        ]
-      }
-    }
-  }
+resource "kubectl_manifest" "letsencrypt_issuer" {
+  yaml_body = <<YAML
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata: 
+  name: ${var.name}
+  labels:
+    name: ${var.name}
+spec: 
+  acme: 
+    server: ${var.server}
+    email: ${var.email}
+    privateKeySecretRef: 
+      name: ${kubernetes_secret.letsencrypt_issuer_secret.metadata.0.name}
+    solvers:
+    - http01: 
+        ingress: 
+          class: ${var.ingress_class}
+YAML
 }
\ No newline at end of file
diff --git a/cert-manager-webhook/mutating-webhook-configuration.tf b/cert-manager-webhook/mutating-webhook-configuration.tf
index 7008b75..a255a22 100644
--- a/cert-manager-webhook/mutating-webhook-configuration.tf
+++ b/cert-manager-webhook/mutating-webhook-configuration.tf
@@ -1,42 +1,28 @@
-resource "kubernetes_manifest" "mutating_webhook_configuration" {
-  manifest = {
-    "apiVersion" = "admissionregistration.k8s.io/v1beta1"
-    "kind"       = "MutatingWebhookConfiguration"
-    "metadata" = {
-      "name" = var.name
-
-      "labels" = merge({
-        "app.kubernetes.io/name" = var.name
-      }, local.labels)
-      annotations = {
-        "cert-manager.io/inject-ca-from-secret" = "cert-manager/cert-manager-webhook-ca"
-      }
-    }
-    "webhooks" = [
-      {
-        name = "webhook.cert-manager.io"
-        admissionReviewVersions = [
-          "v1",
-          "v1beta1"
-        ]
-        rules = [
-          {
-            apiGroups   = ["cert-manager.io", "acme.cert-manager.io"]
-            apiVersions = ["v1alpha2"]
-            operations  = ["CREATE", "UPDATE"]
-            resources   = ["*/*"]
-          }
-        ]
-        failurePolicy = "Fail"
-        sideEffects   = "None"
-        clientConfig = {
-          service = {
-            name      = var.name
-            namespace = var.namespace
-            path      = "/mutate"
-          }
-        }
-      }
-    ]
-  }
+resource "kubectl_manifest" "mutating_webhook_configuration" {
+  yaml_body = <<YAML
+apiVersion: admissionregistration.k8s.io/v1beta1
+kind: MutatingWebhookConfiguration
+metadata: 
+  name: "${var.name}"
+  labels:
+    app.kubernetes.io/name: "${var.name}"
+    ${join("\n    ",[for key, value in local.labels : "${key}: \"${value}\""])}
+  annotations:
+    cert-manager.io/inject-ca-from-secret: "cert-manager/cert-manager-webhook-ca"
+webhooks:
+- name: "webhook.cert-manager.io"
+  admissionReviewVersions: ["v1", "v1beta1"]
+  rules:
+  - apiGroups:   ["cert-manager.io", "acme.cert-manager.io"]
+    apiVersions: ["v1alpha2"]
+    operations:  ["CREATE", "UPDATE"]
+    resources:   ["*/*"]
+  failurePolicy: "Fail"
+  sideEffects: "None"
+  clientConfig:
+    service:
+      name: "${var.name}"
+      namespace: "${var.namespace}"
+      path: "/mutate"
+YAML
 }
\ No newline at end of file
diff --git a/cert-manager-webhook/validating-webhook-configuration.tf b/cert-manager-webhook/validating-webhook-configuration.tf
index 37e8021..d161561 100644
--- a/cert-manager-webhook/validating-webhook-configuration.tf
+++ b/cert-manager-webhook/validating-webhook-configuration.tf
@@ -1,62 +1,38 @@
-resource "kubernetes_manifest" "validating_webhook_configuration" {
-  manifest = {
-    "apiVersion" = "admissionregistration.k8s.io/v1beta1"
-    "kind"       = "ValidatingWebhookConfiguration"
-    "metadata" = {
-      "name" = var.name
-      "labels" = {
-        "app"                          = local.app
-        "app.kubernetes.io/name"       = var.name
-        "app.kubernetes.io/instance"   = var.instance_id
-        "app.kubernetes.io/managed-by" = "terraform"
-      }
-      "annotations" = {
-        "cert-manager.io/inject-ca-from-secret" = "cert-manager/cert-manager-webhook-ca"
-      }
-    }
-    "webhooks" = [
-      {
-        name = "webhook.cert-manager.io"
-        namespaceSelector = {
-          "matchExpressions" = [
-            {
-              values = [
-                "true"
-              ]
-              operator = "NotIn"
-              key      = "cert-manager.io/disable-validation"
-            },
-            {
-              values = [
-                "cert-manager"
-              ]
-              operator = "NotIn"
-              key      = "name"
-            }
-          ]
-        }
-        rules = [
-          {
-            apiGroups   = ["cert-manager.io", "acme.cert-manager.io"]
-            apiVersions = ["v1alpha2"]
-            operations  = ["CREATE", "UPDATE"]
-            resources   = ["*/*"]
-          }
-        ]
-        admissionReviewVersions = [
-          "v1",
-          "v1beta1"
-        ]
-        failurePolicy = "Fail"
-        sideEffects   = "None"
-        clientConfig = {
-          service = {
-            name      = var.name
-            namespace = var.namespace
-            path      = "/mutate"
-          }
-        }
-      }
-    ]
-  }
+resource "kubectl_manifest" "validating_webhook_configuration" {
+  yaml_body = <<YAML
+apiVersion: admissionregistration.k8s.io/v1beta1
+kind: ValidatingWebhookConfiguration
+metadata: 
+  name: "${var.name}"
+  labels:
+    app: "${local.app}"
+    app.kubernetes.io/name: "${var.name}"
+    app.kubernetes.io/instance: "${var.instance_id}"
+    app.kubernetes.io/managed-by: "terraform"
+  annotations:
+    cert-manager.io/inject-ca-from-secret: "cert-manager/cert-manager-webhook-ca"
+webhooks:
+- name: "webhook.cert-manager.io"
+  namespaceSelector:
+    matchExpressions:
+    - operator: "NotIn"
+      key: "cert-manager.io/disable-validation"
+      values: ["true"]
+    - operator: "NotIn"
+      key: "name"
+      values: ["cert-manager"]
+  rules:
+  - apiGroups:   ["cert-manager.io", "acme.cert-manager.io"]
+    apiVersions: ["v1alpha2"]
+    operations:  ["CREATE", "UPDATE"]
+    resources:   ["*/*"]
+  admissionReviewVersions: ["v1", "v1beta1"]
+  failurePolicy: "Fail"
+  sideEffects: "None"
+  clientConfig:
+    service:
+      name: "${var.name}"
+      namespace: "${var.namespace}"
+      path: "/mutate"
+YAML
 }
\ No newline at end of file
diff --git a/versions.tf b/versions.tf
index d9018c6..75efba9 100644
--- a/versions.tf
+++ b/versions.tf
@@ -7,5 +7,9 @@ terraform {
     random = {
       source = "hashicorp/random"
     }
+
+    kubectl = {
+      source  = "gavinbunney/kubectl"
+    }
   }
 }
\ No newline at end of file