diff --git a/Dockerfile b/Dockerfile
index 1a19ddee3f..6fd9a3bd0a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,5 +3,9 @@ COPY . lighthouse
 RUN cd lighthouse && make && cargo clean
 
 FROM debian:buster-slim
-RUN apt-get update && apt-get install -y libssl-dev
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  libssl-dev \
+  ca-certificates \
+  && apt-get clean \
+  && rm -rf /var/lib/apt/lists/*
 COPY --from=builder /usr/local/cargo/bin/lighthouse /usr/local/bin/lighthouse