diff --git a/postgresql-groonga/postgresql-groonga.spec b/postgresql-groonga/postgresql-groonga.spec
index fdabb0c103..45d0ea391d 100644
--- a/postgresql-groonga/postgresql-groonga.spec
+++ b/postgresql-groonga/postgresql-groonga.spec
@@ -23,7 +23,7 @@
 
 #   package version
 %define       V_pgroonga_base 2.1.8
-%define       V_pgroonga_snap 20190306
+%define       V_pgroonga_snap 20190501
 
 #   package information
 Name:         postgresql-groonga
@@ -36,7 +36,7 @@ Class:        EVAL
 Group:        Database
 License:      PostgreSQL
 Version:      %{V_pgroonga_base}.%{V_pgroonga_snap}
-Release:      20190306
+Release:      20190501
 
 #   list of sources
 Source0:      http://download.openpkg.org/components/versioned/pgroonga/pgroonga-%{V_pgroonga_snap}.tar.xz