diff --git a/rust-toolchain b/rust-toolchain
deleted file mode 100644
index 07ade694..00000000
--- a/rust-toolchain
+++ /dev/null
@@ -1 +0,0 @@
-nightly
\ No newline at end of file
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 00000000..5d56faf9
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly"