diff --git a/build/root/Makefile b/build/root/Makefile
index 41ed3781108..a392aef3248 100644
--- a/build/root/Makefile
+++ b/build/root/Makefile
@@ -30,7 +30,7 @@ endif
 #   clean: Clean up.
 
 # It's necessary to set this because some environments don't link sh -> bash.
-SHELL := /bin/bash
+SHELL := /usr/bin/env bash
 
 # We don't need make's built-in rules.
 MAKEFLAGS += --no-builtin-rules
diff --git a/build/root/Makefile.generated_files b/build/root/Makefile.generated_files
index 1d5797f4e05..e40448f2428 100644
--- a/build/root/Makefile.generated_files
+++ b/build/root/Makefile.generated_files
@@ -30,7 +30,7 @@ endif
 
 
 # It's necessary to set this because some environments don't link sh -> bash.
-SHELL := /bin/bash
+SHELL := /usr/bin/env bash
 
 # This rule collects all the generated file sets into a single rule.  Other
 # rules should depend on this to ensure generated files are rebuilt.
diff --git a/hack/update-workspace-mirror.sh b/hack/update-workspace-mirror.sh
index c4ff61707c1..59d3b90ac58 100755
--- a/hack/update-workspace-mirror.sh
+++ b/hack/update-workspace-mirror.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #