diff --git a/sepa/Dockerfile b/sepa/Dockerfile
index 51a94a9..a49a595 100644
--- a/sepa/Dockerfile
+++ b/sepa/Dockerfile
@@ -1,6 +1,7 @@
 # use the official Bun image
 # see all versions at https://hub.docker.com/r/oven/bun/tags
 FROM oven/bun:1.1 as base
+RUN apt-get update && apt-get install ca-certificates && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /usr/src/app