diff --git a/python/mozbuild/mozbuild/vendor/vendor_rust.py b/python/mozbuild/mozbuild/vendor/vendor_rust.py
index 64db3d3d55ee..a8f23ff0043c 100644
--- a/python/mozbuild/mozbuild/vendor/vendor_rust.py
+++ b/python/mozbuild/mozbuild/vendor/vendor_rust.py
@@ -89,7 +89,7 @@ TOLERATED_DUPES = {
     "mio": 2,
     "pin-project-lite": 2,
     "target-lexicon": 2,
-    "tokio": 2,
+    "tokio": 3,
 }