diff --git a/merkle-tree/Xargo.toml b/merkle-tree/Xargo.toml
new file mode 100644
index 000000000..475fb71ed
--- /dev/null
+++ b/merkle-tree/Xargo.toml
@@ -0,0 +1,2 @@
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []