diff --git a/ractor_cluster/Cargo.toml b/ractor_cluster/Cargo.toml
index e5909c66..df703dc5 100644
--- a/ractor_cluster/Cargo.toml
+++ b/ractor_cluster/Cargo.toml
@@ -15,7 +15,7 @@ build = "src/build.rs"
 rust-version = "1.64"
 
 [build-dependencies]
-protobuf-src = "1"
+protobuf-src = "2"
 prost-build = { version = "0.12" }
 
 [dependencies]