diff --git a/src/entrypoint.sh b/src/entrypoint.sh
index a223b7b..215e136 100755
--- a/src/entrypoint.sh
+++ b/src/entrypoint.sh
@@ -3,6 +3,9 @@
 # Dump all env vars so we can source them in cron jobs
 printenv | sed 's/^\(.*\)$/export \1/g' > /env.sh
 
+# Update CA certificates
+update-ca-certificates
+
 # Write crontab
 rcb crontab > crontab