diff --git a/pkg/nix/image_service.go b/pkg/nix/image_service.go
index f51e8e4..d327b06 100644
--- a/pkg/nix/image_service.go
+++ b/pkg/nix/image_service.go
@@ -31,6 +31,7 @@ type ImageServiceOpt interface {
 }
 
 type imageService struct {
+	runtime.UnimplementedImageServiceServer
 	mu                 sync.Mutex
 	client             *client.Client
 	imageServiceClient runtime.ImageServiceClient