diff --git a/pyproject.toml b/pyproject.toml
index aca6127..3baabe5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,6 +16,10 @@ mpl = ["pyqt6>=6.9.0"]
 [dependency-groups]
 dev = ["mypy>=1.15.0", "ruff>=0.11.4"]
 
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
 [tool.mypy]
 mypy_path = "src"
 check_untyped_defs = true
@@ -34,7 +38,7 @@ warn_unused_configs = true
 show-fixes = true
 line-length = 120
 indent-width = 4
-target-version = "py312"
+target-version = "py313"
 
 [tool.ruff.lint]
 extend-select = [
diff --git a/src/grovers_visualizer/__init__.py b/src/grovers_visualizer/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/grovers_visualizer/circuit.py b/src/grovers_visualizer/circuit.py
new file mode 100644
index 0000000..e69de29
diff --git a/main.py b/src/grovers_visualizer/main.py
similarity index 100%
rename from main.py
rename to src/grovers_visualizer/main.py
diff --git a/src/grovers_visualizer/plot.py b/src/grovers_visualizer/plot.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/grovers_visualizer/state.py b/src/grovers_visualizer/state.py
new file mode 100644
index 0000000..e69de29
diff --git a/uv.lock b/uv.lock
index eb5158b..f295a05 100644
--- a/uv.lock
+++ b/uv.lock
@@ -70,7 +70,7 @@ wheels = [
 [[package]]
 name = "grovers-visualizer"
 version = "0.1.0"
-source = { virtual = "." }
+source = { editable = "." }
 dependencies = [
     { name = "numpy" },
     { name = "qiskit", extra = ["visualization"] },