diff --git a/servo-tidy.toml b/servo-tidy.toml
index 4fc16ede4d8..531e6f716d3 100644
--- a/servo-tidy.toml
+++ b/servo-tidy.toml
@@ -49,6 +49,13 @@ packages = [
   "parking_lot",
   "parking_lot_core",
   "petgraph",
+  "phf",
+  "phf_codegen",
+  "phf_generator",
+  "phf_shared",
+  "rand",
+  "rand_chacha",
+  "rand_core",
   "redox_syscall",
   "ron",
   "wasi",