diff --git a/v3/rust-toolchain.toml b/v3/rust-toolchain.toml
new file mode 100644
index 00000000000..29dfe38f637
--- /dev/null
+++ b/v3/rust-toolchain.toml
@@ -0,0 +1,4 @@
+[toolchain]
+channel = "1.75.0"
+profile = "default"  # see https://rust-lang.github.io/rustup/concepts/profiles.html
+components = ["rust-analyzer", "rust-src"]  # see https://rust-lang.github.io/rustup/concepts/components.html