diff --git a/hack/update_oneline_install.sh b/hack/update_oneline_install.sh
new file mode 100755
index 0000000..90bc49e
--- /dev/null
+++ b/hack/update_oneline_install.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+if [ "$(uname)" == "Darwin" ]; then
+    readlink_cmd="greadlink" 
+    sed_cmd="gsed"
+else
+    readlink_cmd="readlink"
+    sed_cmd="sed"
+fi
+SCRIPT_DIR="$(dirname $($readlink_cmd -f $0))"
+
+$sed_cmd -i "s/SHA=\w\+/SHA=$(sha256sum hack/bootstrap_tfw_dev.sh | cut -d ' ' -f1)/g" "${SCRIPT_DIR}/oneline_install.sh"