diff --git a/backup.sh b/backup.sh
index 60b8296..8610411 100755
--- a/backup.sh
+++ b/backup.sh
@@ -7,7 +7,7 @@ set -euf -o pipefail
 DB_PATH="/app/$DB_NAME.sqlite3"
 BACKUP_PATH="/app/backup"
 BACKUP_FILE="${BACKUP_PATH}/backup-$(date +%H).sqlite3"
-TAR_FILE="${BACKUP_PATH}/backup-$(date +%H).tar.zst"
+TAR_FILE="${BACKUP_PATH}/backup-$(date +%H).tar.gz"
 
 # Ensure the backup directory exists
 mkdir -p "${BACKUP_PATH}"
@@ -16,7 +16,7 @@ mkdir -p "${BACKUP_PATH}"
 sqlite3 "${DB_PATH}" "VACUUM INTO '${BACKUP_FILE}'"
 
 # Compress the backup
-tar --zstd -cf "${TAR_FILE}" "${BACKUP_FILE}"
+tar --gzip -cf "${TAR_FILE}" "${BACKUP_FILE}"
 
 # Upload to S3
-aws s3 cp "${TAR_FILE}" s3://$S3_BUCKET/backup-$(date +%H).tar.zst
+aws s3 cp "${TAR_FILE}" s3://$S3_BUCKET/backup-$(date +%H).tar.gz