diff --git a/PyTeX/format/formatterif.py b/PyTeX/format/formatterif.py
index 3228073..bbf1f5c 100644
--- a/PyTeX/format/formatterif.py
+++ b/PyTeX/format/formatterif.py
@@ -55,3 +55,7 @@ class FormatterIF:
     @config.setter
     def config(self, config: Config):
         self._config = config
+
+    @property
+    def dependencies(self) -> List[str]:
+        raise NotImplementedError