diff --git a/deployments/scripts/protobuf-codegen b/deployments/scripts/protobuf-codegen
index 503016266f..a9d86b41d7 100755
--- a/deployments/scripts/protobuf-codegen
+++ b/deployments/scripts/protobuf-codegen
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Generate code for Rust & Go from proto definitions.
 
 set -euo pipefail