diff --git a/libs/hbb_common/Cargo.toml b/libs/hbb_common/Cargo.toml
index 6dc5319..64d759f 100644
--- a/libs/hbb_common/Cargo.toml
+++ b/libs/hbb_common/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-protobuf = { version = "3.0.0-pre", git = "https://github.com/stepancheg/rust-protobuf" }
+protobuf = { version = "3.0.0-alpha.1", git = "https://github.com/stepancheg/rust-protobuf" }
 tokio = { version = "0.2", features = ["full"] }
 tokio-util = { version = "0.3", features = ["full"] }
 futures = "0.3"
@@ -36,7 +36,7 @@ mac_address = "1.1"
 quic = ["quinn"]
 
 [build-dependencies]
-protobuf-codegen-pure = { version = "3.0.0-pre", git = "https://github.com/stepancheg/rust-protobuf" }
+protobuf-codegen-pure = { version = "3.0.0-alpha.1", git = "https://github.com/stepancheg/rust-protobuf" }
 
 [target.'cfg(target_os = "windows")'.dependencies]
 winapi = { version = "0.3", features = ["winuser"] }