diff --git a/docker-compose.yml b/docker-compose.yml
index 152b6d9..a1c1c1a 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,6 +7,8 @@ services:
             MARIADB_DATABASE: catask
             MARIADB_USER: catask
             MARIADB_PASSWORD: catask
+        expose:
+            - "3306/tcp"
         healthcheck:
             test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
             start_period: 10s