diff --git a/Dockerfile b/Dockerfile
index 3e6f6ed..7d82e1c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,5 @@
 FROM yastdevel/ruby
+RUN zypper --gpg-auto-import-keys --non-interactive in --no-recommends \
+    perl-XML-XPath
 COPY . /usr/src/app