diff --git a/Dockerfile b/Dockerfile
index 6487c22..cfe12be 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,7 @@ RUN mkdir -p /usr/share/man/man1 \
 	&& apt-get -qy dist-upgrade \
 	&& apt-get -qy install --no-install-recommends \
 		build-essential \
+		ca-certificates \
 		dpkg-dev \
 		fakeroot \
 		git \