diff --git a/internal/sdk/client/graphql.schema b/internal/sdk/client/graphql.schema
index 5e1e894..aba587e 100644
--- a/internal/sdk/client/graphql.schema
+++ b/internal/sdk/client/graphql.schema
@@ -2784,7 +2784,7 @@ input UpdateHCloudEnvSpecInput {
   """
   Wireguard peers configuration.
   """
-  wireguardPeers: [HCloudEnvWireguardPeerSpecInput!]!
+  wireguardPeers: [HCloudEnvWireguardPeerSpecInput!]
 }
 
 """
diff --git a/internal/sdk/client/model_gen.go b/internal/sdk/client/model_gen.go
index aaa5859..6d9a15e 100644
--- a/internal/sdk/client/model_gen.go
+++ b/internal/sdk/client/model_gen.go
@@ -2054,7 +2054,7 @@ type UpdateHCloudEnvSpecInput struct {
 	// Encrypted value of HCLOUD_TOKEN
 	HcloudTokenEnc *string `json:"hcloudTokenEnc,omitempty"`
 	// Wireguard peers configuration.
-	WireguardPeers []*HCloudEnvWireguardPeerSpecInput `json:"wireguardPeers"`
+	WireguardPeers []*HCloudEnvWireguardPeerSpecInput `json:"wireguardPeers,omitempty"`
 }
 
 // Kubernetes environment update request input.