diff --git a/Dockerfile b/Dockerfile
index d3e0bf8..96d35c0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,3 +36,6 @@ RUN cd /usr/lib/python3/dist-packages && echo "/Td6WFoAAATm1rRGAgAhARYAAAB0L+Wj4
 # download and patch aosp-repo
 ADD --chmod=0755 https://storage.googleapis.com/git-repo-downloads/repo /usr/local/bin/aosp-repo
 RUN sed -i 's:#!/usr/bin/env python:#!/usr/bin/env python3:' /usr/local/bin/aosp-repo
+
+# install ed for debmirror
+RUN apt-get install --no-install-recommends -y ed