diff --git a/triagebot.toml b/triagebot.toml
index 403a7087ee1..f8752fdcaca 100644
--- a/triagebot.toml
+++ b/triagebot.toml
@@ -451,6 +451,10 @@ cc = ["@davidtwco", "@compiler-errors", "@JohnTitor", "@TaKO8Ki"]
 message = "`rustc_macros::diagnostics` was changed"
 cc = ["@davidtwco", "@compiler-errors", "@JohnTitor", "@TaKO8Ki"]
 
+[mentions."compiler/rustc_smir"]
+message = "This PR changes Stable MIR"
+cc = ["@oli-obk", "@celinval"]
+
 [mentions."compiler/rustc_target/src/spec"]
 message = """
 These commits modify **compiler targets**.