diff --git a/docker/bionic/Dockerfile b/docker/bionic/Dockerfile
index aa173a1..54235b3 100644
--- a/docker/bionic/Dockerfile
+++ b/docker/bionic/Dockerfile
@@ -60,6 +60,10 @@ RUN apt-get install -yq --no-install-suggests --no-install-recommends \
     build-essential libcap-dev tor
     
 
+# locales
+RUN apt-get install -yq --no-install-suggests --no-install-recommends \
+    language-pack-en
+
 # cleanup
 RUN rm -rf /var/lib/apt/lists/*