diff --git a/Dockerfile_stg b/Dockerfile_stg
index 5330452e..f449e6fb 100644
--- a/Dockerfile_stg
+++ b/Dockerfile_stg
@@ -36,7 +36,8 @@ ADD conf/ripmime /bin/ripmime
 
 RUN chmod +x /bin/ripmime \
     && a2ensite cmc-sales \
-    && a2dissite 000-default
+    && a2dissite 000-default \
+    && a2enmod headers
 
 # Copy site into place.
 ADD . /var/www/cmc-sales