diff --git a/protobuf/regenerate.sh b/protobuf/regenerate.sh
index 4987e8eee..4da70c1b0 100755
--- a/protobuf/regenerate.sh
+++ b/protobuf/regenerate.sh
@@ -34,7 +34,7 @@ esac
 "$PROTOC" \
     --plugin=protoc-gen-rust="$where_am_i/target/debug/protoc-gen-rust$exe_suffix" \
     --rust_out tmp-generated \
-    --rust_opt 'inside_protobuf=true gen_mod_rs=false' \
+    --rust_opt 'inside_protobuf=true,gen_mod_rs=false,experimental-codegen=enabled,kernel=cpp' \
     -I../proto \
     ../proto/google/protobuf/*.proto \
     ../proto/google/protobuf/compiler/*.proto \