diff --git a/pyproject.toml b/pyproject.toml
index 03f94491..b26b8ddd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,16 +59,7 @@ version = { attr = "olmo_core.version.VERSION" }
 [tool.setuptools.packages.find]
 where = ["src"]
 include = ["olmo_core*"]
-exclude = [
-    "*.tests",
-    "*.tests.*",
-    "tests.*",
-    "tests",
-    "test_fixtures",
-    "test_fixtures.*",
-    "docs*",
-    "scripts*",
-]
+exclude = []
 
 [tool.black]
 line-length = 115
diff --git a/src/olmo_core/py.typed b/src/olmo_core/py.typed
new file mode 100644
index 00000000..e69de29b