diff --git a/ledger_app.toml b/ledger_app.toml
new file mode 100644
index 0000000..c88a1c3
--- /dev/null
+++ b/ledger_app.toml
@@ -0,0 +1,4 @@
+[app]
+build_directory = "./"
+sdk = "C"
+devices = ['nanos', 'nanosp', 'nanox']