diff --git a/src/landppt/core/__init__.py b/src/landppt/core/__init__.py
new file mode 100644
index 0000000..bbc8459
--- /dev/null
+++ b/src/landppt/core/__init__.py
@@ -0,0 +1,3 @@
+"""
+Core modules for LandPPT
+"""