diff --git a/electrolytes/__init__.py b/electrolytes/__init__.py
index fa548e4..b60a4ae 100644
--- a/electrolytes/__init__.py
+++ b/electrolytes/__init__.py
@@ -113,7 +113,7 @@ def _save_user_constituents(components: Dict[str, Constituent]) -> None:
 
 
 def _load_default_constituents() -> Dict[str, Constituent]:
-    data = pkgutil.get_data(__name__, "data/db1.json")
+    data = pkgutil.get_data(__name__, "db1.json")
     if data is None:
         raise RuntimeError("failed to load default constituents")
 
diff --git a/electrolytes/data/db1.json b/electrolytes/db1.json
similarity index 100%
rename from electrolytes/data/db1.json
rename to electrolytes/db1.json
diff --git a/pyproject.toml b/pyproject.toml
index 71bf6f0..a3e8e44 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,8 +52,14 @@ Repository = "https://github.com/microfluidica/electrolytes"
 [project.scripts]
 electrolytes = "electrolytes.__main__:app"
 
+[tool.setuptools]
+packages = ["electrolytes"]
+
 [tool.setuptools.dynamic]
 version = {attr = "electrolytes.__version__"}
 
+[tool.setuptools.package-data]
+electrolytes = ["*.json"]
+
 [tool.mypy]
 plugins = ["pydantic.mypy"]