diff --git a/protobuf/Cargo.toml b/protobuf/Cargo.toml
index b9f69d92..3576fc08 100644
--- a/protobuf/Cargo.toml
+++ b/protobuf/Cargo.toml
@@ -8,11 +8,11 @@ edition = "2018"
 [dependencies]
 bytes = "0.4"
 futures = "0.1"
-env_logger = "0.6"
-derive_more = "0.14"
-prost = "0.4.0"
-prost-derive = "0.4.0"
+env_logger = "0.7.0"
+derive_more = "0.15.0"
+prost = "0.5.0"
+prost-derive = "0.5.0"
 
-actix = "0.8.2"
-actix-web = "1.0.0"
-actix-protobuf = "0.4.0"
+actix = "0.8.3"
+actix-web = "1.0.8"
+actix-protobuf = "0.4.1"