diff --git a/textproc/groonga/Makefile b/textproc/groonga/Makefile
index 8ba2e699fc0d..a77ef5cfc0f2 100644
--- a/textproc/groonga/Makefile
+++ b/textproc/groonga/Makefile
@@ -1,5 +1,5 @@
 PORTNAME=	groonga
-PORTVERSION=	12.0.5
+PORTVERSION=	12.0.6
 CATEGORIES=	textproc
 MASTER_SITES=	http://packages.groonga.org/source/groonga/
 
diff --git a/textproc/groonga/distinfo b/textproc/groonga/distinfo
index 0672647c19ab..70bed3a7a84e 100644
--- a/textproc/groonga/distinfo
+++ b/textproc/groonga/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1658226260
-SHA256 (groonga-12.0.5.tar.gz) = abf1bdbf4b7ae1700f7725ea8d8139844fadb473457d7d907a8ebe94fdd5e451
-SIZE (groonga-12.0.5.tar.gz) = 25193257
+TIMESTAMP = 1659817854
+SHA256 (groonga-12.0.6.tar.gz) = 0d5ba6d9f51ad41892c8bd1df21cd1a370331154915f6101ac9e030412317ed1
+SIZE (groonga-12.0.6.tar.gz) = 25499743
diff --git a/textproc/groonga/pkg-plist b/textproc/groonga/pkg-plist
index 656685ea3584..c3091b305446 100644
--- a/textproc/groonga/pkg-plist
+++ b/textproc/groonga/pkg-plist
@@ -295,6 +295,7 @@ sbin/groonga-httpd-restart
 %%RUBY%%%%DATADIR%%/mruby/LEGAL
 %%DATADIR%%/munin/plugins/groonga_cpu_load_
 %%DATADIR%%/munin/plugins/groonga_cpu_time_
+%%DATADIR%%/munin/plugins/groonga_delta_
 %%DATADIR%%/munin/plugins/groonga_disk_
 %%DATADIR%%/munin/plugins/groonga_memory_
 %%DATADIR%%/munin/plugins/groonga_n_records_