diff --git a/lib/Cargo.toml b/lib/Cargo.toml
index e47ec035..4b8927a1 100644
--- a/lib/Cargo.toml
+++ b/lib/Cargo.toml
@@ -86,7 +86,7 @@ criterion = { version = "0.5", features = ["async_std", "html_reports"] }
 actix-web = { version = "4.2", default-features = false, features = ["macros"] }
 uuid = "1.1"
 email-address-parser = "2.0"
-prost = "0.11"
+prost = "0.12"
 
 asserhttp = { version = "0.6", features = ["surf", "isahc", "reqwest", "actix", "tonic"] }