diff --git a/pyproject.toml b/pyproject.toml
index 2d6f9a0..37e9fd8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,6 +37,9 @@ test = [
 dev = [
 	"pyenvutils",
 ]
+[project.entry-points.natlink_extensions]
+unimacro_builtins = "unimacro.UnimacroGrammars:locateme"
+
 [tool.pytest.ini_options]
 minversion = "7.1.2"
 addopts = "--capture=tee-sys "
diff --git a/src/unimacro/UnimacroGrammars/__init__.py b/src/unimacro/UnimacroGrammars/__init__.py
index e69de29..c369f13 100644
--- a/src/unimacro/UnimacroGrammars/__init__.py
+++ b/src/unimacro/UnimacroGrammars/__init__.py
@@ -0,0 +1,2 @@
+def locateme():
+    return __path__[0]
\ No newline at end of file