diff --git a/actions/actions.go b/actions/actions.go
index 901b21e5..ea374309 100644
--- a/actions/actions.go
+++ b/actions/actions.go
@@ -36,6 +36,7 @@ type ActionHandler interface {
 func NewService(
 	log logrus.FieldLogger,
 	cfg Config,
+	k8sVersion string,
 	clientset *kubernetes.Clientset,
 	castaiClient castai.Client,
 	helmClient helm.Client,
@@ -43,6 +44,7 @@ func NewService(
 	return &service{
 		log:            log,
 		cfg:            cfg,
+		k8sVersion:     k8sVersion,
 		castaiClient:   castaiClient,
 		startedActions: map[string]struct{}{},
 		actionHandlers: map[reflect.Type]ActionHandler{
@@ -64,6 +66,8 @@ type service struct {
 	cfg          Config
 	castaiClient castai.Client
 
+	k8sVersion string
+
 	actionHandlers map[reflect.Type]ActionHandler
 
 	startedActionsWg sync.WaitGroup
@@ -114,7 +118,7 @@ func (s *service) doWork(ctx context.Context) error {
 func (s *service) pollActions(ctx context.Context) ([]*castai.ClusterAction, error) {
 	ctx, cancel := context.WithTimeout(ctx, s.cfg.PollTimeout)
 	defer cancel()
-	actions, err := s.castaiClient.GetActions(ctx)
+	actions, err := s.castaiClient.GetActions(ctx, s.k8sVersion)
 	if err != nil {
 		return nil, err
 	}
diff --git a/actions/actions_test.go b/actions/actions_test.go
index d462a452..71bdd515 100644
--- a/actions/actions_test.go
+++ b/actions/actions_test.go
@@ -33,7 +33,14 @@ func TestActions(t *testing.T) {
 	}
 
 	newTestService := func(handler ActionHandler, client castai.Client) *service {
-		svc := NewService(log, cfg, nil, client, nil).(*service)
+		svc := NewService(
+			log,
+			cfg,
+			"1.20.1",
+			nil,
+			client,
+			nil,
+		).(*service)
 		handlers := svc.actionHandlers
 		// Patch handlers with a mock one.
 		for k := range handlers {
diff --git a/castai/client.go b/castai/client.go
index 5e442f42..f07b0939 100644
--- a/castai/client.go
+++ b/castai/client.go
@@ -13,12 +13,13 @@ import (
 )
 
 const (
-	headerAPIKey    = "X-API-Key"
-	headerUserAgent = "User-Agent"
+	headerAPIKey            = "X-API-Key"
+	headerUserAgent         = "User-Agent"
+	headerKubernetesVersion = "X-K8s-Version"
 )
 
 type Client interface {
-	GetActions(ctx context.Context) ([]*ClusterAction, error)
+	GetActions(ctx context.Context, k8sVersion string) ([]*ClusterAction, error)
 	AckAction(ctx context.Context, actionID string, req *AckClusterActionRequest) error
 	SendLogs(ctx context.Context, req *LogEvent) error
 	SendAKSInitData(ctx context.Context, req *AKSInitDataRequest) error
@@ -84,11 +85,12 @@ func (c *client) SendLogs(ctx context.Context, req *LogEvent) error {
 	return nil
 }
 
-func (c *client) GetActions(ctx context.Context) ([]*ClusterAction, error) {
+func (c *client) GetActions(ctx context.Context, k8sVersion string) ([]*ClusterAction, error) {
 	res := &GetClusterActionsResponse{}
 	resp, err := c.rest.R().
 		SetContext(ctx).
 		SetResult(res).
+		SetHeader(headerKubernetesVersion, k8sVersion).
 		Get(fmt.Sprintf("/v1/kubernetes/clusters/%s/actions", c.clusterID))
 	if err != nil {
 		return nil, fmt.Errorf("failed to request cluster-actions: %w", err)
diff --git a/castai/mock/client.go b/castai/mock/client.go
index 9a925ab2..49a5060f 100644
--- a/castai/mock/client.go
+++ b/castai/mock/client.go
@@ -35,7 +35,7 @@ func (m *mockClient) SendAKSInitData(ctx context.Context, req *castai.AKSInitDat
 	return nil
 }
 
-func (m *mockClient) GetActions(_ context.Context) ([]*castai.ClusterAction, error) {
+func (m *mockClient) GetActions(_ context.Context, _ string) ([]*castai.ClusterAction, error) {
 	m.mu.Lock()
 	actions := m.Actions
 	m.mu.Unlock()
diff --git a/main.go b/main.go
index b855d241..12060311 100644
--- a/main.go
+++ b/main.go
@@ -130,7 +130,14 @@ func run(
 		AckRetryWait:     1 * time.Second,
 		ClusterID:        cfg.ClusterID,
 	}
-	svc := actions.NewService(log, actionsConfig, clientset, client, helmClient)
+	svc := actions.NewService(
+		log,
+		actionsConfig,
+		k8sVersion.Full(),
+		clientset,
+		client,
+		helmClient,
+	)
 
 	if cfg.LeaderElection.Enabled {
 		lock, err := newLeaseLock(clientset, cfg.LeaderElection.LockName, cfg.LeaderElection.Namespace)