diff --git a/Dockerfile b/Dockerfile
index c65470d200989cfa9bcbbdd3a1f674ae2f4f7307..954194e21ae8f379d9c6e7325bfd1ebe122096a3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,4 +3,5 @@ RUN apt update
 RUN apt install -y librsvg2-bin imagemagick
 RUN apt install -y rubber
 RUN apt install -y inkscape
+RUN apt install -y bc
 RUN sed -i '/disable ghostscript format types/,+6d' /etc/ImageMagick-6/policy.xml