diff --git a/src/panel/panel.hpp b/src/panel/panel.hpp
index 7d0a70d..0e6e57f 100644
--- a/src/panel/panel.hpp
+++ b/src/panel/panel.hpp
@@ -30,6 +30,9 @@ namespace dashboard::panel {
 
     protected:
         SDL_Texture* _texture;
+
+        virtual void update() = 0;
+        virtual void update_texture() = 0;
         virtual void initTexture() = 0;
     };
 }