diff --git a/openstack-config/regen.sh b/openstack-config/regen.sh
new file mode 100755
index 0000000..17b4643
--- /dev/null
+++ b/openstack-config/regen.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+echo "Refreshing git repos"
+HERE=`pwd`
+cd ~/git/openstack
+for i in *; do
+  cd $i && git pull && cd ..
+done
+cd $HERE
+
+echo "Collecting revisions..."
+
+grep -v '^#' havana-all | \
+      while read project revisions; do \
+        cd ~/git/openstack/$project; \
+        git log | awk -F '[<>]' '/^Author:/ {print $2}'; \
+      done | sort | uniq | grep -v '\((none)\|\.local\)$' > tmp
+
+echo "Building email list..."
+
+sed 's/ /\n/' < aliases >> tmp
+sed 's/ /\n/' < other-aliases >> tmp
+(sort | uniq | grep -v '\((none)\|\.local\)$') < tmp > emails.txt
+
+echo "Mapping to launchpad ids"
+
+../tools/with_venv.sh python ../launchpad/map-email-to-lp-name.py \
+  $(cat emails.txt) | sort > launchpad-ids.txt