diff --git a/Dockerfile b/Dockerfile
index a76b1b3..217ae19 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,6 +9,7 @@ ARG DEBCONF_NONINTERACTIVE_SEEN="true"
 RUN set -eu && \
     apt-get update && \
     apt-get --no-install-recommends -y install \
+        bc \
         curl \
         7zip \
         wsdd \