diff --git a/Bedtime/ci_scripts/ci_post_xcodebuild.sh b/Bedtime/ci_scripts/ci_post_xcodebuild.sh
new file mode 100755
index 0000000..8cf02a4
--- /dev/null
+++ b/Bedtime/ci_scripts/ci_post_xcodebuild.sh
@@ -0,0 +1,9 @@
+#!/bin/zsh
+set -eu
+
+if [[ "${CI_XCODEBUILD_ACTION:-}" == "archive" && -d "${CI_APP_STORE_SIGNED_APP_PATH:-}" ]]; then
+  # what to test
+  TESTFLIGHT_DIR_PATH=../TestFlight
+  mkdir -p "$TESTFLIGHT_DIR_PATH"
+  echo "Branch: $CI_BRANCH" >! "$TESTFLIGHT_DIR_PATH/WhatToTest.en-US.txt"
+fi