diff --git a/pyproject.toml b/pyproject.toml
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--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,27 @@
+[project]
+name = "dfine"
+version = "0.1.0"
+description = "Real-time object detector based on DETRs and FDR."
+readme = "README.md"
+requires-python = ">=3.10"
+dependencies = [
+    "calflops>=0.3.2",
+    "loguru>=0.7.3",
+    "pyyaml>=6.0.2",
+    "scipy>=1.15.2",
+    "torch>=2.0.1",
+    "torchvision>=0.15.2",
+    "transformers>=4.50.3",
+]
+
+[project.optional-dependencies]
+training = [
+    "faster-coco-eval>=1.6.5",
+    "tensorboard>=2.19.0",
+]
+all = [
+    "dfine[training]",
+]
+
+[tool.uv.sources]
+dfine = { workspace = true }
diff --git a/src/__init__.py b/src/dfine/__init__.py
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rename from src/__init__.py
rename to src/dfine/__init__.py
diff --git a/src/core/__init__.py b/src/dfine/core/__init__.py
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diff --git a/src/core/_config.py b/src/dfine/core/_config.py
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diff --git a/src/core/workspace.py b/src/dfine/core/workspace.py
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diff --git a/src/core/yaml_config.py b/src/dfine/core/yaml_config.py
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diff --git a/src/core/yaml_utils.py b/src/dfine/core/yaml_utils.py
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diff --git a/src/data/__init__.py b/src/dfine/data/__init__.py
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diff --git a/src/data/_misc.py b/src/dfine/data/_misc.py
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diff --git a/src/data/dataloader.py b/src/dfine/data/dataloader.py
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diff --git a/src/data/dataset/__init__.py b/src/dfine/data/dataset/__init__.py
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diff --git a/src/data/dataset/_dataset.py b/src/dfine/data/dataset/_dataset.py
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diff --git a/src/data/dataset/cifar_dataset.py b/src/dfine/data/dataset/cifar_dataset.py
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rename to src/dfine/data/dataset/cifar_dataset.py
diff --git a/src/data/dataset/coco_dataset.py b/src/dfine/data/dataset/coco_dataset.py
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rename to src/dfine/data/dataset/coco_dataset.py
diff --git a/src/data/dataset/coco_eval.py b/src/dfine/data/dataset/coco_eval.py
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rename to src/dfine/data/dataset/coco_eval.py
diff --git a/src/data/dataset/coco_utils.py b/src/dfine/data/dataset/coco_utils.py
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rename to src/dfine/data/dataset/coco_utils.py
diff --git a/src/data/dataset/voc_detection.py b/src/dfine/data/dataset/voc_detection.py
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rename to src/dfine/data/dataset/voc_detection.py
diff --git a/src/data/dataset/voc_eval.py b/src/dfine/data/dataset/voc_eval.py
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rename to src/dfine/data/dataset/voc_eval.py
diff --git a/src/data/transforms/__init__.py b/src/dfine/data/transforms/__init__.py
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diff --git a/src/data/transforms/_transforms.py b/src/dfine/data/transforms/_transforms.py
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diff --git a/src/data/transforms/container.py b/src/dfine/data/transforms/container.py
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diff --git a/src/data/transforms/functional.py b/src/dfine/data/transforms/functional.py
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diff --git a/src/data/transforms/mosaic.py b/src/dfine/data/transforms/mosaic.py
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diff --git a/src/misc/__init__.py b/src/dfine/misc/__init__.py
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diff --git a/src/nn/__init__.py b/src/dfine/nn/__init__.py
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