diff --git a/MANIFEST.in b/MANIFEST.in
index 55724b79..cf416353 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -5,7 +5,7 @@ recursive-exclude __pycache__  *.py[cod] *.orig
 
 # Include the README and CHANGELOG
 include *.md
-recursive-include src *.md
+recursive-include lit_data *.md
 
 # Include the license file
 include LICENSE
diff --git a/requirements/test.txt b/requirements/test.txt
index 560c8706..90b502be 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -9,3 +9,4 @@ pandas
 pyarrow
 pillow
 lightning
+mypy