diff --git a/.gitignore b/.gitignore
index 6cadf19..cb8b165 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,4 +11,5 @@ wheels/
 
 # CUSTOM STUFF
 untitled/saves
-.ruff_cache
\ No newline at end of file
+.ruff_cache
+.pytest_cache
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index b6782a3..a513b8f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,4 +16,11 @@ dev = [
 target-version = "py313"
 
 [tool.ruff.lint]
-extend-select = ["E", "F", "I", "UP", "B", "SIM"]
\ No newline at end of file
+extend-select = ["E", "F", "I", "UP", "B", "SIM"]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["untitled"]
\ No newline at end of file
diff --git a/tests/test_persistence.py b/tests/test_persistence.py
new file mode 100644
index 0000000..aaf822b
--- /dev/null
+++ b/tests/test_persistence.py
@@ -0,0 +1 @@
+from untitled import model, persistence
diff --git a/uv.lock b/uv.lock
index c20444c..5dc6289 100644
--- a/uv.lock
+++ b/uv.lock
@@ -91,7 +91,7 @@ wheels = [
 [[package]]
 name = "untitled-cat-game"
 version = "0.1.0"
-source = { virtual = "." }
+source = { editable = "." }
 
 [package.dev-dependencies]
 dev = [