diff --git a/hudson_mac_build_release.sh b/hudson_mac_build_release.sh
index 8b29689..55e7608 100755
--- a/hudson_mac_build_release.sh
+++ b/hudson_mac_build_release.sh
@@ -65,5 +65,9 @@ echo "Syncing base packages files from sphere.telascience.org"
 rsync -avz --filter 'merge base-package.rules' \
  -e ssh jturner@sphere.telascience.org:/home/jturner/fgdata .
 
+# run the unlock script now - we need to do this right before code-signing,
+# or the keychain may automatically re-lock after some period of time
+/Users/Shared/Hudson/unlock-keychain.sh
+
 echo "Running package script"
 ./hudson_mac_package_release.rb