diff --git a/Dockerfile b/Dockerfile
index e7fdab4..826e203 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ ENV RTM_DOWNLOAD_URL "ftp://ftp.ovh.net/made-in-ovh/rtm/install_rtm-"
 ENV RTM_INSTALLER_CHECKSUM 16dcde3cf46f82dcacfb63535b9375c97f0cc1ba4e412c086f0f03dd8a5483ac
 ENV RTM_REPORT_INTERVAL 60
 
-RUN apk add --no-cache bash curl sed gawk bind-tools screen dmidecode pciutils bzip2 perl procps coreutils
+RUN apk add --no-cache bash curl sed gawk bind-tools screen dmidecode pciutils bzip2 perl procps coreutils bc
 
 COPY init.sh /usr/bin/init.sh