diff --git a/hack/update-codegen.sh b/hack/update-codegen.sh
index 6de0f5ef2..265445a41 100755
--- a/hack/update-codegen.sh
+++ b/hack/update-codegen.sh
@@ -19,6 +19,7 @@ set -o nounset
 set -o pipefail
 
 source $(dirname $0)/../vendor/knative.dev/hack/codegen-library.sh
+source "${CODEGEN_PKG}/kube_codegen.sh"
 
 # If we run with -mod=vendor here, then generate-groups.sh looks for vendor files in the wrong place.
 export GOFLAGS=-mod=
@@ -27,14 +28,16 @@ echo "=== Update Codegen for ${MODULE_NAME}"
 
 group "Kubernetes Codegen"
 
-# generate the code with:
-# --output-base    because this script should also be able to run inside the vendor dir of
-#                  k8s.io/kubernetes. The output-base is needed for the generators to output into the vendor dir
-#                  instead of the $GOPATH directly. For normal projects this can be dropped.
-${CODEGEN_PKG}/generate-groups.sh "deepcopy,client,informer,lister" \
-"knative.dev/eventing-github/pkg/client" "knative.dev/eventing-github/pkg/apis" \
-"sources:v1alpha1 bindings:v1alpha1" \
---go-header-file ${REPO_ROOT_DIR}/hack/boilerplate.go.txt
+kube::codegen::gen_helpers \
+  --boilerplate "${REPO_ROOT_DIR}/hack/boilerplate.go.txt" \
+  "${REPO_ROOT_DIR}/pkg/apis"
+
+kube::codegen::gen_client \
+  --boilerplate "${REPO_ROOT_DIR}/hack/boilerplate.go.txt" \
+  --output-dir "${REPO_ROOT_DIR}/pkg/client" \
+  --output-pkg "knative.dev/eventing-github/pkg/client" \
+  --with-watch \
+  "${REPO_ROOT_DIR}/pkg/apis"
 
 group "Knative Codegen"
 
@@ -44,14 +47,6 @@ ${KNATIVE_CODEGEN_PKG}/hack/generate-knative.sh "injection" \
 "sources:v1alpha1 bindings:v1alpha1" \
 --go-header-file ${REPO_ROOT_DIR}/hack/boilerplate.go.txt
 
-group "Deepcopy Gen"
-
-# Depends on generate-groups.sh to install bin/deepcopy-gen
-${GOPATH}/bin/deepcopy-gen \
-  -O zz_generated.deepcopy \
-  --go-header-file ${REPO_ROOT_DIR}/hack/boilerplate.go.txt \
-  -i knative.dev/eventing-github/pkg/apis \
-
 group "Update deps post-codegen"
 
 # Make sure our dependencies are up-to-date
diff --git a/pkg/apis/bindings/v1alpha1/zz_generated.defaults.go b/pkg/apis/bindings/v1alpha1/zz_generated.defaults.go
new file mode 100644
index 000000000..927723623
--- /dev/null
+++ b/pkg/apis/bindings/v1alpha1/zz_generated.defaults.go
@@ -0,0 +1,33 @@
+//go:build !ignore_autogenerated
+// +build !ignore_autogenerated
+
+/*
+Copyright 2020 The Knative Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by defaulter-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+)
+
+// RegisterDefaults adds defaulters functions to the given scheme.
+// Public to allow building arbitrary schemes.
+// All generated defaulters are covering - they call all nested defaulters.
+func RegisterDefaults(scheme *runtime.Scheme) error {
+	return nil
+}
diff --git a/pkg/apis/sources/v1alpha1/zz_generated.defaults.go b/pkg/apis/sources/v1alpha1/zz_generated.defaults.go
new file mode 100644
index 000000000..927723623
--- /dev/null
+++ b/pkg/apis/sources/v1alpha1/zz_generated.defaults.go
@@ -0,0 +1,33 @@
+//go:build !ignore_autogenerated
+// +build !ignore_autogenerated
+
+/*
+Copyright 2020 The Knative Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by defaulter-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+)
+
+// RegisterDefaults adds defaulters functions to the given scheme.
+// Public to allow building arbitrary schemes.
+// All generated defaulters are covering - they call all nested defaulters.
+func RegisterDefaults(scheme *runtime.Scheme) error {
+	return nil
+}
diff --git a/pkg/client/injection/informers/sources/factory/fake/fake.go b/pkg/client/injection/informers/sources/factory/fake/fake.go
deleted file mode 100644
index 4b7e7cf26..000000000
--- a/pkg/client/injection/informers/sources/factory/fake/fake.go
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
-Copyright 2019 The Knative Authors
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Code generated by injection-gen. DO NOT EDIT.
-
-package fake
-
-import (
-	"context"
-
-	externalversions "knative.dev/eventing-github/pkg/client/informers/externalversions"
-	fake "knative.dev/eventing-github/pkg/client/injection/client/fake"
-	factory "knative.dev/eventing-github/pkg/client/injection/informers/sources/factory"
-	controller "knative.dev/pkg/controller"
-	injection "knative.dev/pkg/injection"
-)
-
-var Get = factory.Get
-
-func init() {
-	injection.Fake.RegisterInformerFactory(withInformerFactory)
-}
-
-func withInformerFactory(ctx context.Context) context.Context {
-	c := fake.Get(ctx)
-	opts := make([]externalversions.SharedInformerOption, 0, 1)
-	if injection.HasNamespaceScope(ctx) {
-		opts = append(opts, externalversions.WithNamespace(injection.GetNamespaceScope(ctx)))
-	}
-	return context.WithValue(ctx, factory.Key{},
-		externalversions.NewSharedInformerFactoryWithOptions(c, controller.GetResyncPeriod(ctx), opts...))
-}
diff --git a/pkg/client/injection/informers/sources/factory/sourcesfactory.go b/pkg/client/injection/informers/sources/factory/sourcesfactory.go
deleted file mode 100644
index b48846246..000000000
--- a/pkg/client/injection/informers/sources/factory/sourcesfactory.go
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
-Copyright 2019 The Knative Authors
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Code generated by injection-gen. DO NOT EDIT.
-
-package sourcesfactory
-
-import (
-	"context"
-
-	externalversions "knative.dev/eventing-github/pkg/client/informers/externalversions"
-	client "knative.dev/eventing-github/pkg/client/injection/client"
-	controller "knative.dev/pkg/controller"
-	injection "knative.dev/pkg/injection"
-	logging "knative.dev/pkg/logging"
-)
-
-func init() {
-	injection.Default.RegisterInformerFactory(withInformerFactory)
-}
-
-// Key is used as the key for associating information with a context.Context.
-type Key struct{}
-
-func withInformerFactory(ctx context.Context) context.Context {
-	c := client.Get(ctx)
-	opts := make([]externalversions.SharedInformerOption, 0, 1)
-	if injection.HasNamespaceScope(ctx) {
-		opts = append(opts, externalversions.WithNamespace(injection.GetNamespaceScope(ctx)))
-	}
-	return context.WithValue(ctx, Key{},
-		externalversions.NewSharedInformerFactoryWithOptions(c, controller.GetResyncPeriod(ctx), opts...))
-}
-
-// Get extracts the InformerFactory from the context.
-func Get(ctx context.Context) externalversions.SharedInformerFactory {
-	untyped := ctx.Value(Key{})
-	if untyped == nil {
-		logging.FromContext(ctx).Fatalf(
-			"Unable to fetch %T from context.", (externalversions.SharedInformerFactory)(nil))
-	}
-	return untyped.(externalversions.SharedInformerFactory)
-}
diff --git a/pkg/client/injection/reconciler/sources/v1alpha1/githubsource/stub/controller.go b/pkg/client/injection/reconciler/sources/v1alpha1/githubsource/stub/controller.go
deleted file mode 100644
index aced827e6..000000000
--- a/pkg/client/injection/reconciler/sources/v1alpha1/githubsource/stub/controller.go
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
-Copyright 2020 The Knative Authors
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Code generated by injection-gen. DO NOT EDIT.
-
-package githubsource
-
-import (
-	context "context"
-
-	githubsource "knative.dev/eventing-github/pkg/client/injection/informers/sources/v1alpha1/githubsource"
-	v1alpha1githubsource "knative.dev/eventing-github/pkg/client/injection/reconciler/sources/v1alpha1/githubsource"
-	configmap "knative.dev/pkg/configmap"
-	controller "knative.dev/pkg/controller"
-	logging "knative.dev/pkg/logging"
-)
-
-// TODO: PLEASE COPY AND MODIFY THIS FILE AS A STARTING POINT
-
-// NewController creates a Reconciler for GitHubSource and returns the result of NewImpl.
-func NewController(
-	ctx context.Context,
-	cmw configmap.Watcher,
-) *controller.Impl {
-	logger := logging.FromContext(ctx)
-
-	githubsourceInformer := githubsource.Get(ctx)
-
-	// TODO: setup additional informers here.
-
-	r := &Reconciler{}
-	impl := v1alpha1githubsource.NewImpl(ctx, r)
-
-	logger.Info("Setting up event handlers.")
-
-	githubsourceInformer.Informer().AddEventHandler(controller.HandleAll(impl.Enqueue))
-
-	// TODO: add additional informer event handlers here.
-
-	return impl
-}
diff --git a/pkg/client/injection/reconciler/sources/v1alpha1/githubsource/stub/reconciler.go b/pkg/client/injection/reconciler/sources/v1alpha1/githubsource/stub/reconciler.go
deleted file mode 100644
index d75438328..000000000
--- a/pkg/client/injection/reconciler/sources/v1alpha1/githubsource/stub/reconciler.go
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
-Copyright 2020 The Knative Authors
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Code generated by injection-gen. DO NOT EDIT.
-
-package githubsource
-
-import (
-	context "context"
-
-	v1 "k8s.io/api/core/v1"
-	v1alpha1 "knative.dev/eventing-github/pkg/apis/sources/v1alpha1"
-	githubsource "knative.dev/eventing-github/pkg/client/injection/reconciler/sources/v1alpha1/githubsource"
-	reconciler "knative.dev/pkg/reconciler"
-)
-
-// TODO: PLEASE COPY AND MODIFY THIS FILE AS A STARTING POINT
-
-// newReconciledNormal makes a new reconciler event with event type Normal, and
-// reason GitHubSourceReconciled.
-func newReconciledNormal(namespace, name string) reconciler.Event {
-	return reconciler.NewEvent(v1.EventTypeNormal, "GitHubSourceReconciled", "GitHubSource reconciled: \"%s/%s\"", namespace, name)
-}
-
-// Reconciler implements controller.Reconciler for GitHubSource resources.
-type Reconciler struct {
-	// TODO: add additional requirements here.
-}
-
-// Check that our Reconciler implements Interface
-var _ githubsource.Interface = (*Reconciler)(nil)
-
-// Optionally check that our Reconciler implements Finalizer
-//var _ githubsource.Finalizer = (*Reconciler)(nil)
-
-// Optionally check that our Reconciler implements ReadOnlyInterface
-// Implement this to observe resources even when we are not the leader.
-//var _ githubsource.ReadOnlyInterface = (*Reconciler)(nil)
-
-// Optionally check that our Reconciler implements ReadOnlyFinalizer
-// Implement this to observe tombstoned resources even when we are not
-// the leader (best effort).
-//var _ githubsource.ReadOnlyFinalizer = (*Reconciler)(nil)
-
-// ReconcileKind implements Interface.ReconcileKind.
-func (r *Reconciler) ReconcileKind(ctx context.Context, o *v1alpha1.GitHubSource) reconciler.Event {
-	// TODO: use this if the resource implements InitializeConditions.
-	// o.Status.InitializeConditions()
-
-	// TODO: add custom reconciliation logic here.
-
-	// TODO: use this if the object has .status.ObservedGeneration.
-	// o.Status.ObservedGeneration = o.Generation
-	return newReconciledNormal(o.Namespace, o.Name)
-}
-
-// Optionally, use FinalizeKind to add finalizers. FinalizeKind will be called
-// when the resource is deleted.
-//func (r *Reconciler) FinalizeKind(ctx context.Context, o *v1alpha1.GitHubSource) reconciler.Event {
-//	// TODO: add custom finalization logic here.
-//	return nil
-//}
-
-// Optionally, use ObserveKind to observe the resource when we are not the leader.
-// func (r *Reconciler) ObserveKind(ctx context.Context, o *v1alpha1.GitHubSource) reconciler.Event {
-// 	// TODO: add custom observation logic here.
-// 	return nil
-// }
-
-// Optionally, use ObserveFinalizeKind to observe resources being finalized when we are no the leader.
-//func (r *Reconciler) ObserveFinalizeKind(ctx context.Context, o *v1alpha1.GitHubSource) reconciler.Event {
-// 	// TODO: add custom observation logic here.
-//	return nil
-//}