diff --git a/manifests/backup.pp b/manifests/backup.pp
index b5107ea..5f6f7c8 100644
--- a/manifests/backup.pp
+++ b/manifests/backup.pp
@@ -37,7 +37,7 @@ define mysql_backup::backup (
 
   cron { "${name}-backup":
     ensure  => present,
-    command => "/usr/bin/mysqldump --defaults-file=${defaults_file} --opt --ignore-table mysql.event --all-databases | gzip -9 > ${dest_dir}/${name}.sql.gz",
+    command => "/usr/bin/mysqldump --defaults-file=${defaults_file} --opt --ignore-table mysql.event --all-databases --single-transaction | gzip -9 > ${dest_dir}/${name}.sql.gz",
     minute  => $minute,
     hour    => $hour,
     weekday => $day,
diff --git a/manifests/backup_remote.pp b/manifests/backup_remote.pp
index 839b371..d0cf414 100644
--- a/manifests/backup_remote.pp
+++ b/manifests/backup_remote.pp
@@ -47,7 +47,7 @@ define mysql_backup::backup_remote (
 
   cron { "${name}-backup":
     ensure  => present,
-    command => "/usr/bin/mysqldump --defaults-file=${defaults_file} --opt --ignore-table mysql.event --all-databases | gzip -9 > ${dest_dir}/${name}.sql.gz",
+    command => "/usr/bin/mysqldump --defaults-file=${defaults_file} --opt --ignore-table mysql.event --all-databases --single-transaction | gzip -9 > ${dest_dir}/${name}.sql.gz",
     minute  => $minute,
     hour    => $hour,
     weekday => $day,