diff --git a/docs/development/local_setup.md b/docs/development/local_setup.md
index 7c549f9f975..a7658b8d05a 100644
--- a/docs/development/local_setup.md
+++ b/docs/development/local_setup.md
@@ -280,7 +280,6 @@ service/gardener-apiserver created
 service/gardener-admission-controller created
 endpoints/gardener-apiserver created
 endpoints/gardener-admission-controller created
-apiservice.apiregistration.k8s.io/v1alpha1.core.gardener.cloud created
 apiservice.apiregistration.k8s.io/v1beta1.core.gardener.cloud created
 apiservice.apiregistration.k8s.io/v1alpha1.seedmanagement.gardener.cloud created
 apiservice.apiregistration.k8s.io/v1alpha1.settings.gardener.cloud created
diff --git a/hack/local-development/dev-setup-register-gardener b/hack/local-development/dev-setup-register-gardener
index 576b22c2114..12f83a8fc46 100755
--- a/hack/local-development/dev-setup-register-gardener
+++ b/hack/local-development/dev-setup-register-gardener
@@ -40,7 +40,6 @@ if [[ "$(uname -s)" == *"Darwin"* ]] || [[ "$(uname -s)" == "Linux" && "$(uname
   APISERVER_EXTERNAL_NAME=host.docker.internal
 fi
 
-CORE_V1ALPHA1_APISERVICE_NAME="v1alpha1.core.gardener.cloud"
 CORE_V1BETA1_APISERVICE_NAME="v1beta1.core.gardener.cloud"
 SEEDMANAGEMENT_APISERVICE_NAME="v1alpha1.seedmanagement.gardener.cloud"
 SETTINGS_APISERVICE_NAME="v1alpha1.settings.gardener.cloud"
@@ -63,10 +62,6 @@ if [[ $(k8s_env) == "$NODELESS" ]]; then
 fi
 ADMISSION_CONTROLLER_PORT_STRING="      port: $ADMISSION_CONTROLLER_SERVICE_PORT"
 
-if kubectl get apiservice "$CORE_V1ALPHA1_APISERVICE_NAME" &> /dev/null; then
-  kubectl delete apiservice $CORE_V1ALPHA1_APISERVICE_NAME --wait=false
-  kubectl patch  apiservice $CORE_V1ALPHA1_APISERVICE_NAME -p '{"metadata":{"finalizers":null}}' 2> /dev/null || true
-fi
 if kubectl get apiservice "$CORE_V1BETA1_APISERVICE_NAME" &> /dev/null; then
   kubectl delete apiservice $CORE_V1BETA1_APISERVICE_NAME --wait=false
   kubectl patch  apiservice $CORE_V1BETA1_APISERVICE_NAME -p '{"metadata":{"finalizers":null}}' 2> /dev/null || true
@@ -175,21 +170,6 @@ fi
 cat <<EOF | kubectl apply -f -
 apiVersion: apiregistration.k8s.io/v1
 kind: APIService
-metadata:
-  name: $CORE_V1ALPHA1_APISERVICE_NAME
-spec:
-  insecureSkipTLSVerify: true
-  group: core.gardener.cloud
-  version: v1alpha1
-  groupPriorityMinimum: 9999
-  versionPriority: 19
-  service:
-    name: gardener-apiserver
-    namespace: garden
-$APISERVICE_PORT_STRING
----
-apiVersion: apiregistration.k8s.io/v1
-kind: APIService
 metadata:
   name: $CORE_V1BETA1_APISERVICE_NAME
 spec: