diff --git a/perl-Crypt-Primes.spec b/perl-Crypt-Primes.spec
index 89add99..0c82114 100644
--- a/perl-Crypt-Primes.spec
+++ b/perl-Crypt-Primes.spec
@@ -1,8 +1,8 @@
 Summary:	Provable prime number generator for cryptographic applications
 Name:		perl-Crypt-Primes
 Version:	0.50
-Release:	3%{?dist}
-License:	GPL or Artistic
+Release:	4%{?dist}
+License:	GPL+ or Artistic
 Group:		Development/Libraries
 Url:		http://search.cpan.org/dist/Crypt-Primes/
 Source0:	http://search.cpan.org/CPAN/authors/id/V/VI/VIPUL/Crypt-Primes-%{version}.tar.gz
@@ -53,6 +53,9 @@ Parameters" (1994).
 %{_mandir}/man3/Crypt::Primes.3pm*
 
 %changelog
+* Sun Aug 12 2007 Paul Howarth <paul@city-fan.org> 0.50-4
+- Clarify license as GPL v1 or later, or Artistic (same as perl)
+
 * Thu Mar  8 2007 Paul Howarth <paul@city-fan.org> 0.50-3
 - Buildrequire perl(ExtUtils::MakeMaker)
 - Fix argument order for find with -depth