diff --git a/sign.sh b/sign.sh
new file mode 100755
index 000000000..befed854b
--- /dev/null
+++ b/sign.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -ex
+
+for APK in /src/app/build/outputs/apk/play/release/Signal-play-*-release-unsigned-*.apk
+do
+    echo "${KEY_PASSWORD}"|${ANDROID_HOME}/build-tools/${ANDROID_BUILD_TOOLS_VERSION}/apksigner sign --ks "${KEY_PATH}" "${APK}"
+    APK_NAME=$(basename ${APK})
+    cp ${APK} /builds/${APK_NAME/'unsigned-'/''}
+done