diff --git a/postgresql-plruby.spec b/postgresql-plruby.spec
index 58a5faa..fb55123 100644
--- a/postgresql-plruby.spec
+++ b/postgresql-plruby.spec
@@ -16,6 +16,7 @@ BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 Url:		https://github.com/knu/postgresql-plruby
 BuildRequires:	ruby >= 1.8 ruby-devel >= 1.8 postgresql-devel >= 8.1
 Requires:	postgresql-libs, ruby(release)
+Requires:	postgresql-server(:MODULE_COMPAT_%{postgresql_major})
 
 Patch0: postgresql-plruby-bitopers.patch
 Patch2: postgresql-plruby-retval.patch
@@ -78,6 +79,7 @@ rm -rf %{buildroot}
 %changelog
 * Fri Jan 08 2016 Pavel Raiskup <praiskup@redhat.com> - 0.5.4-7
 - Rebuild for PostgreSQL 9.5 (rhbz#1296584)
+- make sure compatible server is installed
 
 * Thu Jun 18 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.5.4-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild