diff --git a/Dockerfile b/Dockerfile
index f7b6694..4433827 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,6 +2,9 @@ FROM sabayon/spinbase-amd64
 
 MAINTAINER mudler <mudler@sabayonlinux.org>
 
+# Set locales to en_US.UTF-8
+ENV LC_ALL=en_US.UTF-8
+
 # Perform post-upgrade tasks (mirror sorting, updating repository db)
 ADD ./script/post-upgrade.sh /post-upgrade.sh
 RUN /bin/bash /post-upgrade.sh  && rm -rf /post-upgrade.sh