diff --git a/.mypy.ini b/.mypy.ini
index 444361e..73e19ab 100644
--- a/.mypy.ini
+++ b/.mypy.ini
@@ -1,4 +1,5 @@
 [mypy]
+files = src/
 ignore_missing_imports = True
 strict_optional = False
 allow_redefinition = True
@@ -7,4 +8,4 @@ show_column_numbers = True
 warn_unreachable = False
 
 [mypy-xarray]
-follow_imports = skip
\ No newline at end of file
+follow_imports = skip