diff --git a/latest/Dockerfile b/latest/Dockerfile
index c2f6bef..c8f9b11 100644
--- a/latest/Dockerfile
+++ b/latest/Dockerfile
@@ -10,7 +10,7 @@ apt-get clean
 RUN echo "deb http://repo.aptly.info/ squeeze main" > /etc/apt/sources.list.d/aptly.list && \
 apt-key adv --keyserver keys.gnupg.net --recv-keys 9C7DE460 && \
 apt-get update && \
-apt-get install aptly -y && \
+apt-get install aptly ca-certificates -y && \
 apt-get clean
 
 ADD aptly.conf /etc/aptly.conf