diff --git a/servo-tidy.toml b/servo-tidy.toml
index 4687a58842b..2a28326cb9f 100644
--- a/servo-tidy.toml
+++ b/servo-tidy.toml
@@ -31,7 +31,7 @@ num = []
 
 [ignore]
 # Ignored packages with duplicated versions
-packages = ["byteorder", "serde_codegen_internals", "syn"]
+packages = ["byteorder"]
 # Files that are ignored for all tidy and lint checks.
 files = [
   # Generated and upstream code combined with our own. Could use cleanup