diff --git a/hack/update-codegen.sh b/hack/update-codegen.sh
new file mode 100755
index 0000000..7b10ede
--- /dev/null
+++ b/hack/update-codegen.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+
+# Copyright 2017 The Kubernetes 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.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+SCRIPT_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+
+# Make sure code-generator is available
+go get k8s.io/code-generator/cmd/client-gen
+
+CODEGEN_PKG=${CODEGEN_PKG:-$(go env GOPATH)/src/k8s.io/code-generator}
+
+# 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 $GOPATH directly. For normal projects this can be dropped.
+bash "${CODEGEN_PKG}"/generate-groups.sh "client" \
+  github.com/luizbafilho/lokust github.com/luizbafilho/lokust/api \
+  tests:v1beta1 \
+  --output-base "$(dirname "${BASH_SOURCE[0]}")/../../.." \
+  --go-header-file "${SCRIPT_ROOT}"/hack/boilerplate.go.txt
+
+# To use your own boilerplate text append:
+#   --go-header-file "${SCRIPT_ROOT}"/hack/custom-boilerplate.go.txt