diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..271800c
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly"
\ No newline at end of file
diff --git a/treefmt.toml b/treefmt.toml
new file mode 100644
index 0000000..8f89868
--- /dev/null
+++ b/treefmt.toml
@@ -0,0 +1,10 @@
+# One CLI to format the code tree - https://github.com/numtide/treefmt
+
+[formatter.nix]
+command = "alejandra"
+includes = [ "*.nix" ]
+
+[formatter.rust]
+command = "rustfmt"
+options = ["--edition", "2021"]
+includes = ["*.rs"]
\ No newline at end of file