diff --git a/datafusion/proto/gen/Cargo.toml b/datafusion/proto/gen/Cargo.toml
index 37c49666d3d7..f58357c6c5d9 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 = "=0.12.1"
+prost-build = "=0.12.2"