diff --git a/docker/backup/Dockerfile b/docker/backup/Dockerfile
index 3fb91ea..fc319b8 100644
--- a/docker/backup/Dockerfile
+++ b/docker/backup/Dockerfile
@@ -1,13 +1,15 @@
-FROM python:3.12
+FROM mysql:8.4
 
-# Install MySQL client.
-RUN apt-get update && apt-get install -y mariadb-client
+# Use the official MySQL dump client for MySQL generated-column support.
+# Install Python and gzip for the S3 client and compressed backups.
+RUN microdnf install -y python3-pip gzip && microdnf clean all
 
 # Install S3 client.
-RUN pip install s3cmd
+RUN pip3 install --no-cache-dir s3cmd
 
 # Copy files.
 COPY scripts/backup.sh ./
 
 # Run backup task.
-CMD bash backup.sh
+ENTRYPOINT []
+CMD ["bash", "backup.sh"]
diff --git a/scripts/backup.sh b/scripts/backup.sh
index 13eaa5d..c59f702 100644
--- a/scripts/backup.sh
+++ b/scripts/backup.sh
@@ -5,7 +5,7 @@ while true; do
     SQL_FILE=$(date '+%Y-%m-%d.%H').sql.gz
 
     # Dump and compress database in one stream
-    mysqldump --no-tablespaces -h ${MYSQL_HOST:=127.0.0.1} -u ${MYSQL_USER:=gorse} -p${MYSQL_PASSWORD:=gorse_pass} --ssl-verify-server-cert=0 ${MYSQL_DATABASE:=gorse} users items feedback flask_dance_oauth | gzip > $SQL_FILE
+    mysqldump --no-tablespaces -h ${MYSQL_HOST:=127.0.0.1} -u ${MYSQL_USER:=gorse} -p${MYSQL_PASSWORD:=gorse_pass} --ssl-mode=PREFERRED ${MYSQL_DATABASE:=gorse} users items feedback flask_dance_oauth | gzip > $SQL_FILE
 
     # Upload SQL file
     s3cmd --access_key=$S3_ACCESS_KEY \