diff --git a/repos/rust-lang/project-stable-mir.toml b/repos/rust-lang/project-stable-mir.toml
new file mode 100644
index 000000000..d13c95f84
--- /dev/null
+++ b/repos/rust-lang/project-stable-mir.toml
@@ -0,0 +1,10 @@
+org = "rust-lang"
+name = "project-stable-mir"
+description = "Define compiler intermediate representation usable by external tools"
+bots = ["rustbot"]
+
+[access.teams]
+project-stable-mir = "write"
+
+[[branch-protections]]
+pattern = "main"