diff --git a/.gitignore b/.gitignore
index 155dcf9..b40fca8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ ginac-1.5.6.tar.bz2
 /ginac-98433210d31a34b55c8283eb7fb7767d6c830e14.tar.gz
 /ginac-edfa67d26bac695b5ef9911f3cda3ff50232e35a.tar.gz
 /ginac-1.6.3.tar.bz2
+/ginac-1.6.5.tar.bz2
diff --git a/ginac.spec b/ginac.spec
index 41f5418..09c7e8c 100644
--- a/ginac.spec
+++ b/ginac.spec
@@ -3,9 +3,9 @@
 #%global gitrev    %(c=%{commit}; echo ${c:0:7})
 
 Name:             ginac
-Version:          1.6.3
+Version:          1.6.5
 #Release:          10.%{gitdate}git%{gitrev}%{?dist}
-Release:          3%{?dist}
+Release:          1%{?dist}
 Summary:          C++ library for symbolic calculations
 License:          GPLv2+
 URL:              http://www.ginac.de/
@@ -30,8 +30,9 @@ BuildRequires:    texinfo
 BuildRequires:    texlive-collection-latex
 BuildRequires:    texinfo-tex
 BuildRequires:    transfig
-Obsoletes:        GiNaC < 1.3.2
+Obsoletes:        GiNaC < 1.3.2-999
 Provides:         GiNaC = %{version}-%{release}
+Provides:         GiNaC%{?_isa} = %{version}-%{release}
 Requires(post):   info
 Requires(preun):  info
 
@@ -43,8 +44,9 @@ open framework for symbolic computation within the C++ programming language.
 Summary:          Development files for %{name}
 Requires:         %{name}%{?_isa} = %{version}-%{release}
 Requires:         cln-devel%{?_isa}
-Obsoletes:        GiNaC-devel < 1.3.2
+Obsoletes:        GiNaC-devel < 1.3.2-999
 Provides:         GiNaC-devel = %{version}-%{release}
+Provides:         GiNaC-devel%{?_isa} = %{version}-%{release}
 
 %description      devel
 This package contains libraries and header files for
@@ -67,14 +69,13 @@ the tool "viewgar" which displays the contents of GiNaC archives.
 sed -i 's| @GINACLIB_RPATH@||' ginac.pc.{in,cmake}
 
 %build
-# Same as above as recommended by the upstream.
 %cmake -DCMAKE_INSTALL_RPATH=""
 %make_build
 make -C doc/tutorial/ ginac_html
 
 %install
 %make_install
-rm -f %{buildroot}%{_infodir}/dir
+rm -frv %{buildroot}%{_infodir}/dir
 find %{buildroot} -name '*.la' -delete -print
 
 %check
@@ -110,6 +111,9 @@ fi
 %{_bindir}/*
 
 %changelog
+* Sun Aug 09 2015 Christopher Meng <rpm@cicku.me> - 1.6.5-1
+- Update to 1.6.5
+
 * Wed Jun 17 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.6.3-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
 
diff --git a/sources b/sources
index c61f0d1..81c4c64 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-d02b5abed584e52499729382447d997f  ginac-1.6.3.tar.bz2
+5379a3ce17c30277513ef8ca9e0f53c2  ginac-1.6.5.tar.bz2