diff --git a/bignum-0.63.tar.gz b/bignum-0.63.tar.gz
deleted file mode 100644
index 644e62d..0000000
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diff --git a/bignum-0.66.tar.gz b/bignum-0.66.tar.gz
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diff --git a/perl-bignum.spec b/perl-bignum.spec
index 1edd211..39c7c55 100644
--- a/perl-bignum.spec
+++ b/perl-bignum.spec
@@ -1,6 +1,6 @@
 Name:      perl-bignum
-Version:   0.63
-Release:   2
+Version:   0.66
+Release:   1
 Summary:   transparent big number support
 License:   GPL or Artistic
 URL:       https://metacpan.org/release/bignum
@@ -12,15 +12,16 @@ BuildRequires: gcc perl(ExtUtils::MakeMaker) perl-interpreter perl-generators
 #for test
 BuildRequires: perl(Test::More) >= 0.88
 
-Requires:      perl(:MODULE_COMPAT_%(perl -V:version | cut -d"'" -f 2)) perl(Carp)
+Requires:      perl(:MODULE_COMPAT_%(perl -V:version | cut -d"'" -f 2)) perl(Carp) >= 1.22
 #for test
-Requires:      perl(Math::BigRat) >= 0.2618 perl(Math::BigInt) >= 1.999825
+Requires:      perl(Math::BigRat) >= 0.2623 perl(Math::BigInt) >= 1.999830
 
 %description
 Three modules provided by this package:
  * bigint - Transparent BigInteger support for Perl
  * bignum - Transparent BigNumber support for Perl
  * bigrat - Transparent BigNumber/BigRational support for Perl
+ * bigfloat - Transparent big floating point number support for Perl
 
 %package_help
 
@@ -48,6 +49,9 @@ make test TEST_VERBOSE=1
 %{_mandir}/man3/*
 
 %changelog
+* Fri Jul 28 2023 renhongxun <renhongxun@h-partners.com> 0.66-1
+- upgrade version to 0.66
+
 * Tue Oct 25 2022 renhongxun <renhongxun@h-partners.com> 0.63-2
 - Rebuild for next release