diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 00000000..5a3a8f07
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,12 @@
+[toolchain]
+channel = "1.85"
+components = [ "rust-src", "rustfmt", "llvm-tools" ]
+targets = [
+    "thumbv7em-none-eabi",
+    "thumbv7m-none-eabi",
+    "thumbv6m-none-eabi",
+    "thumbv7em-none-eabihf",
+    "thumbv8m.main-none-eabihf",
+    "riscv32i-unknown-none-elf",
+    "riscv64imac-unknown-none-elf",
+]