diff --git a/PyTeX/format/dict_formatter.py b/PyTeX/format/dict_formatter.py
index 3d61387..c4e2c5d 100644
--- a/PyTeX/format/dict_formatter.py
+++ b/PyTeX/format/dict_formatter.py
@@ -5,6 +5,7 @@ from typing import List, Dict, Tuple, Optional
 from .constants import *
 from .pytex_formatter import PyTeXFormatter
 from ..logger import logger
+from .formatting_config import FormattingConfig
 
 
 class DictFormatter(PyTeXFormatter):
@@ -21,6 +22,9 @@ class DictFormatter(PyTeXFormatter):
         self._dict_name = self.input_file.name.split('.')[0]
         self._translations = None
 
+    def dependencies(self) -> List[str]:
+        return []  # No dependencies for dictionaries
+
     @property
     def translations(self) -> Dict:
         if self._translations is None:
@@ -50,7 +54,7 @@ class DictFormatter(PyTeXFormatter):
                     translations[self._languages[n]][line[0]] = line[n]
         return translations
 
-    def format(self, build_dir: Path, overwrite: bool = False) -> Optional[List[Tuple[str, Dict]]]:
+    def format(self, build_dir: Path, overwrite: bool = False) -> List[Tuple[str, FormattingConfig]]:
         build_dir.mkdir(parents=True, exist_ok=True)
         self.make_header()
         for language in self._languages:
@@ -86,4 +90,4 @@ class DictFormatter(PyTeXFormatter):
                 logger.info(
                     f'Successfully wrote dictionary file {output_file.name}.'
                 )
-        return None  # No future configuration needed
+        return []  # No future configuration needed
diff --git a/PyTeX/format/formatterif.py b/PyTeX/format/formatterif.py
index 2de433e..2f5f23b 100644
--- a/PyTeX/format/formatterif.py
+++ b/PyTeX/format/formatterif.py
@@ -3,6 +3,7 @@ from typing import List, Optional, Dict, Tuple
 from abc import ABC, abstractmethod
 
 from .config import Config
+from .formatting_config import FormattingConfig
 
 
 class FormatterIF(ABC):
@@ -20,7 +21,7 @@ class FormatterIF(ABC):
         self._config: Optional[Config] = config
 
     @abstractmethod
-    def format(self, build_dir: Path, overwrite: bool = False) -> Optional[List[Tuple[str, Dict]]]:
+    def format(self, build_dir: Path, overwrite: bool = False) -> List[Tuple[str, FormattingConfig]]:
         """
         :param build_dir: Directory where output files are written to
         :param overwrite: overwrite existing files
@@ -44,6 +45,7 @@ class FormatterIF(ABC):
         :return: List of dependencies (as str filenames)
         """
 
+
     @property
     def input_file(self) -> Path:
         if self._input_file is None:
diff --git a/PyTeX/format/simple_tex_formatter.py b/PyTeX/format/simple_tex_formatter.py
index 1cbfab3..4717e22 100644
--- a/PyTeX/format/simple_tex_formatter.py
+++ b/PyTeX/format/simple_tex_formatter.py
@@ -1,3 +1,4 @@
+from .formatting_config import FormattingConfig
 from .tex_formatter import TexFormatter
 from pathlib import Path
 from typing import Optional, List, Tuple, Dict
@@ -14,11 +15,11 @@ class SimpleTeXFormatter(TexFormatter):
     def close_output_stream(self):
         self._output_file.close()
 
-    def future_config(self) -> Optional[List[Tuple[str, Dict]]]:
-        pass
+    def future_config(self) -> List[Tuple[str, FormattingConfig]]:
+        return []  # TODO
 
     def dependencies(self) -> List[str]:
-        return []
+        return []  # TODO
 
     def output_files(self) -> List[str]:
-        return []
+        return [self.input_file.with_suffix('').name]
diff --git a/PyTeX/format/tex_formatter.py b/PyTeX/format/tex_formatter.py
index 9949c9c..b59be29 100644
--- a/PyTeX/format/tex_formatter.py
+++ b/PyTeX/format/tex_formatter.py
@@ -2,6 +2,7 @@ from pathlib import Path
 from typing import List, TextIO, Optional, Tuple, Dict
 from abc import ABC, abstractmethod
 
+from .formatting_config import FormattingConfig
 from .macros import Macro
 from .pytex_formatter import PyTeXFormatter
 
@@ -76,7 +77,7 @@ class TexFormatter(PyTeXFormatter, ABC):
 
     @abstractmethod
     @property
-    def future_config(self) -> Optional[List[Tuple[str, Dict]]]:
+    def future_config(self) -> List[Tuple[str, FormattingConfig]]:
         """
         # TODO
         :return:
@@ -135,7 +136,7 @@ class TexFormatter(PyTeXFormatter, ABC):
                         break
             self._shipout_line()
 
-    def format(self, build_dir: Path, overwrite: bool = False) -> Optional[List[Tuple[str, Dict]]]:
+    def format(self, build_dir: Path, overwrite: bool = False) -> List[Tuple[str, FormattingConfig]]:
         self.open_output_stream(build_dir)
         self.format_pre_header()
         self.format_header()