diff --git a/bnf/apyds_bnf/.gitignore b/bnf/apyds_bnf/.gitignore
index 2cbf0fc..3587b27 100644
--- a/bnf/apyds_bnf/.gitignore
+++ b/bnf/apyds_bnf/.gitignore
@@ -1,2 +1,3 @@
 *
 !__init__.py
+!py.typed
diff --git a/bnf/apyds_bnf/py.typed b/bnf/apyds_bnf/py.typed
new file mode 100644
index 0000000..e69de29