diff --git a/Cargo.toml b/Cargo.toml
index 8f6a978..1d18ae8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,8 +29,8 @@ dtoa = "1.0"
 itoa = "1.0"
 parking_lot = "0.12"
 prometheus-client-derive-encode = { version = "0.5.0", path = "derive-encode" }
-prost = { version = "0.12.0", optional = true }
-prost-types = { version = "0.12.0", optional = true }
+prost = { version = "0.14", optional = true }
+prost-types = { version = "0.14", optional = true }
 
 [dev-dependencies]
 async-std = { version = "1", features = ["attributes"] }
@@ -49,7 +49,7 @@ hyper-util = { version = "0.1.3", features = ["tokio"] }
 http-body-util = "0.1.1"
 
 [build-dependencies]
-prost-build = { version = "0.12.0", optional = true }
+prost-build = { version = "0.14", optional = true }
 
 [[bench]]
 name = "baseline"