diff --git a/Dockerfile b/Dockerfile
index 7f81b05b4dabd299f55c2a5d007a4b8537b01f1b..fe7cc0cdaf4f291c9e8f4cc30cf4ebdc133a3706 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,9 @@ RUN dpkg --add-architecture i386 && \
     apt-get install -y -q gcc git make net-tools libncurses5-dev \
     tftpd zlib1g-dev libssl-dev flex bison libselinux1 gnupg wget \
     diffstat chrpath socat xterm autoconf libtool tar unzip texinfo \
-    zlib1g-dev gcc-multilib build-essential zlib1g:i386 screen pax gzip \
+    zlib1g-dev gcc-multilib build-essential zlib1g:i386 screen pax \
+    gzip \
+    locales \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*