diff --git a/files/debs/general b/files/debs/general
index c27b77d..1460526 100644
--- a/files/debs/general
+++ b/files/debs/general
@@ -17,6 +17,7 @@
 tar
 python-dev
 python2.7
+python-gdbm # needed for testr
 bc
 libyaml-dev
 libffi-dev