diff --git a/Cargo.toml b/Cargo.toml
index 8dcc224..8a2ea99 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ tokio = { version = "1", features = ["rt-multi-thread", "net", "macros", "signal
 hyper = { version = "0.14.16", features = ["server", "http1", "tcp"] }
 
 [build-dependencies]
-prost-build = { version = "0.11.0", optional = true }
+prost-build = { version = "0.12.1", optional = true }
 
 [[bench]]
 name = "family"