diff --git a/Dockerfile b/Dockerfile
index a694584..c246d77 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,6 +4,6 @@ COPY . .
 RUN cargo install --path .
 
 FROM debian:bullseye-slim
-RUN apt-get update && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get -y install ca-certificates && rm -rf /var/lib/apt/lists/*
 COPY --from=builder /usr/local/cargo/bin/cloudflare-dynamic-dns /usr/local/bin/cloudflare-dynamic-dns
 CMD ["cloudflare-dynamic-dns"]
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