diff --git a/datafusion/proto/gen/Cargo.toml b/datafusion/proto/gen/Cargo.toml
index e843827a91ac..01ce92ee9e8e 100644
--- a/datafusion/proto/gen/Cargo.toml
+++ b/datafusion/proto/gen/Cargo.toml
@@ -32,4 +32,4 @@ publish = false
 [dependencies]
 # Pin these dependencies so that the generated output is deterministic
 pbjson-build = "=0.6.2"
-prost-build = "=0.12.3"
+prost-build = "=0.12.4"