diff --git a/actix-protobuf/CHANGES.md b/actix-protobuf/CHANGES.md
index bab17de3d..453bdd3f4 100644
--- a/actix-protobuf/CHANGES.md
+++ b/actix-protobuf/CHANGES.md
@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- Updated `prost` dependency to `0.12`.
 - Minimum supported Rust version (MSRV) is now 1.68.
 
 ## 0.9.0
diff --git a/actix-protobuf/Cargo.toml b/actix-protobuf/Cargo.toml
index 44e9c363e..51cf3a1bd 100644
--- a/actix-protobuf/Cargo.toml
+++ b/actix-protobuf/Cargo.toml
@@ -21,8 +21,8 @@ all-features = true
 actix-web = { version = "4", default-features = false }
 derive_more = "0.99.7"
 futures-util = { version = "0.3.7", default-features = false }
-prost = { version = "0.11", default-features = false }
+prost = { version = "0.12", default-features = false }
 
 [dev-dependencies]
 actix-web = { version = "4", default-features = false, features = ["macros"] }
-prost = { version = "0.11", default-features = false, features = ["prost-derive"] }
+prost = { version = "0.12", default-features = false, features = ["prost-derive"] }