diff --git a/jenkins-docker/slave-sbt/Dockerfile b/jenkins-docker/slave-sbt/Dockerfile
index 3ee9fcd..cdc6d09 100644
--- a/jenkins-docker/slave-sbt/Dockerfile
+++ b/jenkins-docker/slave-sbt/Dockerfile
@@ -2,7 +2,7 @@
 
 # SBT Setup
 RUN apt-get update && \
-    apt-get -y install apt-transport-https && \
+    apt-get -y install bc apt-transport-https && \
     echo "deb https://dl.bintray.com/sbt/debian /" | tee -a /etc/apt/sources.list.d/sbt.list && \
     apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 642AC823 && \
     apt-get update && \
@@ -12,7 +12,7 @@
 
 # SBT warm-up
 RUN cd /tmp && echo hello | sbt new sbt/scala-seed.g8
-RUN echo 'addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.4")' >> /tmp/hello/project/plugins.sbt
+RUN echo 'addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.5")' >> /tmp/hello/project/plugins.sbt
 RUN chown -R jenkins: /tmp/hello
 
 USER jenkins