diff --git a/triagebot.toml b/triagebot.toml
index 89867b63d64f8..54c8b2060c526 100644
--- a/triagebot.toml
+++ b/triagebot.toml
@@ -475,10 +475,10 @@ cc = ["@rust-lang/style"]
 
 [mentions."Cargo.lock"]
 message = """
-These commits modify the `Cargo.lock` file. Random changes to `Cargo.lock` can be introduced when switching branches and rebasing PRs.
-This was probably unintentional and should be reverted before this PR is merged.
+These commits modify the `Cargo.lock` file. Unintentional changes to `Cargo.lock` can be introduced when switching branches and rebasing PRs.
 
-If this was intentional then you can ignore this comment.
+If this was unintentional then you should revert the changes before this PR is merged.
+Otherwise, you can ignore this comment.
 """
 
 [mentions."src/tools/x"]
@@ -489,6 +489,14 @@ message = "This PR changes src/bootstrap/defaults/config.compiler.toml. If appro
 [mentions."src/bootstrap/defaults/config.codegen.toml"]
 message = "This PR changes src/bootstrap/defaults/config.codegen.toml. If appropriate, please also update `config.compiler.toml` so the defaults are in sync."
 
+[mentions."tests/ui/deriving/deriving-all-codegen.stdout"]
+message = "Changes to the code generated for builtin derived traits."
+cc = ["@nnethercote"]
+
+[mentions."tests/ui/stats/hir-stats.stderr"]
+message = "Changes to the size of AST and/or HIR nodes."
+cc = ["@nnethercote"]
+
 [assign]
 warn_non_default_branch = true
 contributing_url = "https://rustc-dev-guide.rust-lang.org/getting-started.html"