diff --git a/docker-compose.production.yml b/docker-compose.production.yml
index 8c7c71c6ccb44bb855ee46b8f813c71e4a76d09a..d54bf974050644e4babd9bcc73c225b905b4c9d7 100644
--- a/docker-compose.production.yml
+++ b/docker-compose.production.yml
@@ -22,5 +22,5 @@ services:
             - 64738:64738/udp
         volumes:
             - /etc/localtime:/etc/localtime:ro
-            - ./reverse_proxy/keys/letsencrypt/:/opt/murmur/cert
+            - ./reverse_proxy/keys/letsencrypt/:/opt/murmur/cert/:ro
         restart: unless-stopped