diff --git a/component/mariadb/buildout.cfg b/component/mariadb/buildout.cfg
index d26267e276142d40b333416bd4b81c039715feea..48a3535a0fe1057ab590fd5c0cf2f2e92c275122 100644
--- a/component/mariadb/buildout.cfg
+++ b/component/mariadb/buildout.cfg
@@ -56,8 +56,8 @@ environment =
 # mroonga - a storage engine for MySQL. It provides fast fulltext search feature to all MySQL users.
 # http://mroonga.github.com/
 recipe = slapos.recipe.cmmi
-url = http://packages.groonga.org/source/mroonga/mroonga-4.03.tar.gz
-md5sum = 19ab2721d2d41c234e018a879f392990
+url = http://packages.groonga.org/source/mroonga/mroonga-4.04.tar.gz
+md5sum = a89987dad7b3e1d99014492e6135eec6
 configure-options =
   --with-mysql-source=${mariadb:location}__compile__/mariadb-${mariadb:version}
   --with-mysql-config=${mariadb:location}/bin/mysql_config