diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index e648b2c..5c81896 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -6,8 +6,10 @@ on:
     tags-ignore:
       - "v*"
   pull_request:
+
 env:
   CGO_ENABLED: 0
+  GO_VERSION: '1.21'
 
 jobs:
   verify:
@@ -19,7 +21,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "${{ env.GO_VERSION }}"
 
       - name: goimports
         run: go install golang.org/x/tools/cmd/goimports@latest && goimports -d . | (! grep .)
@@ -39,7 +41,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "${{ env.GO_VERSION }}"
 
       - name: Unit test
         run: make test
diff --git a/api/v1alpha1/zz_generated.deepcopy.go b/api/v1alpha1/zz_generated.deepcopy.go
index b0eaecf..5134ee9 100644
--- a/api/v1alpha1/zz_generated.deepcopy.go
+++ b/api/v1alpha1/zz_generated.deepcopy.go
@@ -23,8 +23,9 @@ package v1alpha1
 
 import (
 	"k8s.io/api/core/v1"
-	runtime "k8s.io/apimachinery/pkg/runtime"
 	"net/http"
+
+	runtime "k8s.io/apimachinery/pkg/runtime"
 )
 
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.