diff --git a/docs/vercel_overrides.txt b/docs/vercel_overrides.txt
index a8feb592ffe..1fcdb543a69 100644
--- a/docs/vercel_overrides.txt
+++ b/docs/vercel_overrides.txt
@@ -1,3 +1,4 @@
 httpx
 grpcio
 aiohttp<3.11
+protobuf<3.21