diff --git a/docker/Dockerfile b/docker/Dockerfile
index e7f75ea..7201727 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,5 +1,9 @@
 FROM debian:bookworm
 
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends ca-certificates && \
+    rm -rf /var/lib/apt/lists/*
+
 COPY flexilib /usr/local/bin/flexilib
 
 ENTRYPOINT ["/usr/local/bin/flexilib"]