diff --git a/MICROLIB.md b/MICROLIB.md
index ef6d41d..d069530 100644
--- a/MICROLIB.md
+++ b/MICROLIB.md
@@ -71,7 +71,7 @@ this example:
 
 ```python
 import numpy as np
-from mmap_ninja import numpy as np_ninja
+from src.mmap_ninja import numpy as np_ninja
 
 arr = np.random.randn(200, 224, 224, 3)
 np_ninja.from_ndarray('imgs_mmap', arr)
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..98813a1
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,26 @@
+# pyproject.toml
+
+[build-system]
+requires      = ["setuptools>=61.0.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "mmap_ninja"
+version = "0.7.1"
+description = "Microlib for converting LLM weights into sepweight format"
+readme = "README.md"
+authors = [{ name = "Hristo Vrigazov", email = "hvrigazov@gmail.com" }]
+license = { file = "LICENSE" }
+classifiers = [
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+]
+dependencies = ["torch"]
+requires-python = ">=3.8"
+
+[project.urls]
+Homepage = "https://github.com/microlib-org/llm_microlibs/llm_sepweight"
+
+[project.optional-dependencies]
+dev = ["safetensors", "pytest", "tqdm", "pytest-dotenv"]
diff --git a/mmap_ninja/__init__.py b/src/mmap_ninja/__init__.py
similarity index 100%
rename from mmap_ninja/__init__.py
rename to src/mmap_ninja/__init__.py
diff --git a/mmap_ninja/base.py b/src/mmap_ninja/base.py
similarity index 100%
rename from mmap_ninja/base.py
rename to src/mmap_ninja/base.py
diff --git a/mmap_ninja/generic.py b/src/mmap_ninja/generic.py
similarity index 95%
rename from mmap_ninja/generic.py
rename to src/mmap_ninja/generic.py
index a96499d..5c3b5c4 100644
--- a/mmap_ninja/generic.py
+++ b/src/mmap_ninja/generic.py
@@ -1,5 +1,5 @@
 from mmap_ninja import base
-from mmap_ninja import numpy as np_ninja
+from src.mmap_ninja import numpy as np_ninja
 from mmap_ninja.base import Wrapped
 from mmap_ninja.string import StringsMmap
 from mmap_ninja.ragged import RaggedMmap
diff --git a/mmap_ninja/numpy.py b/src/mmap_ninja/numpy.py
similarity index 100%
rename from mmap_ninja/numpy.py
rename to src/mmap_ninja/numpy.py
diff --git a/mmap_ninja/ragged.py b/src/mmap_ninja/ragged.py
similarity index 99%
rename from mmap_ninja/ragged.py
rename to src/mmap_ninja/ragged.py
index 051f7b3..15eb514 100644
--- a/mmap_ninja/ragged.py
+++ b/src/mmap_ninja/ragged.py
@@ -4,7 +4,8 @@
 
 import numpy as np
 
-from mmap_ninja import numpy, base
+from mmap_ninja import base
+from src.mmap_ninja import numpy
 
 
 def _np_shape_extend(shapes, arr):
diff --git a/mmap_ninja/string.py b/src/mmap_ninja/string.py
similarity index 98%
rename from mmap_ninja/string.py
rename to src/mmap_ninja/string.py
index 0999b67..4c0d718 100644
--- a/mmap_ninja/string.py
+++ b/src/mmap_ninja/string.py
@@ -4,7 +4,8 @@
 
 import numpy as np
 
-from mmap_ninja import numpy, base
+from mmap_ninja import base
+from src.mmap_ninja import numpy
 from mmap_ninja.base import _bytes_to_str, _str_to_bytes, _sequence_of_strings_to_bytes
 
 
diff --git a/tests/test_numpy.py b/tests/test_numpy.py
index 4c97899..8243656 100644
--- a/tests/test_numpy.py
+++ b/tests/test_numpy.py
@@ -3,7 +3,8 @@
 
 import numpy as np
 
-from mmap_ninja import numpy as np_ninja, generic
+from mmap_ninja import generic
+from src.mmap_ninja import numpy as np_ninja
 
 
 def test_numpy(tmp_path):