diff --git a/core/installer/app.go b/core/installer/app.go
index 3a16abe..91f290f 100644
--- a/core/installer/app.go
+++ b/core/installer/app.go
@@ -202,7 +202,7 @@
 		networks []Network,
 		values map[string]any,
 		charts map[string]helmv2.HelmChartTemplateSpec,
-		vpnKeyGen VPNAuthKeyGenerator,
+		vpnKeyGen VPNAPIClient,
 	) (EnvAppRendered, error)
 }
 
@@ -459,7 +459,7 @@
 	networks []Network,
 	values map[string]any,
 	charts map[string]helmv2.HelmChartTemplateSpec,
-	vpnKeyGen VPNAuthKeyGenerator,
+	vpnKeyGen VPNAPIClient,
 ) (EnvAppRendered, error) {
 	derived, err := deriveValues(values, values, a.Schema(), networks, vpnKeyGen)
 	if err != nil {