diff --git a/containers/xos/Dockerfile b/containers/xos/Dockerfile
index 9e69cac..dc9a638 100644
--- a/containers/xos/Dockerfile
+++ b/containers/xos/Dockerfile
@@ -86,6 +86,7 @@
 
 # Set environment variables.
 ENV HOME /root
+ENV PYTHONPATH /usr/local/lib/python2.7/site-packages:/usr/lib/python2.7/dist-packages
 
 # Define working directory.
 WORKDIR /opt/xos
diff --git a/containers/xos/Dockerfile.templ b/containers/xos/Dockerfile.templ
index f29305b..216ceb5 100644
--- a/containers/xos/Dockerfile.templ
+++ b/containers/xos/Dockerfile.templ
@@ -80,6 +80,7 @@
 
 # Set environment variables.
 ENV HOME /root
+ENV PYTHONPATH /usr/local/lib/python2.7/site-packages:/usr/lib/python2.7/dist-packages
 
 # Define working directory.
 WORKDIR /root