diff --git a/tools/proto-compiler/Cargo.toml b/tools/proto-compiler/Cargo.toml
index dce658c2..d397deaf 100644
--- a/tools/proto-compiler/Cargo.toml
+++ b/tools/proto-compiler/Cargo.toml
@@ -8,7 +8,7 @@ rust-version = "1.60"
 
 [dependencies]
 git2        = "0.17"
-prost-build = "0.11"
+prost-build = "0.12"
 walkdir     = "2.3"
 argh        = "0.1"
 tonic       = "0.9"