diff --git a/backend/rust-toolchain b/backend/rust-toolchain
new file mode 100644
index 0000000000..e549c80007
--- /dev/null
+++ b/backend/rust-toolchain
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly-2021-04-24"
\ No newline at end of file