diff --git a/.gitignore b/.gitignore
index 4303d7a..155dcf9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ ginac-1.5.6.tar.bz2
 /ginac-1.6.2.tar.bz2
 /ginac-98433210d31a34b55c8283eb7fb7767d6c830e14.tar.gz
 /ginac-edfa67d26bac695b5ef9911f3cda3ff50232e35a.tar.gz
+/ginac-1.6.3.tar.bz2
diff --git a/ginac.spec b/ginac.spec
index c7eb429..a25c205 100644
--- a/ginac.spec
+++ b/ginac.spec
@@ -1,21 +1,22 @@
-%global gitdate   20140630
-%global commit    edfa67d26bac695b5ef9911f3cda3ff50232e35a
-%global gitrev    %(c=%{commit}; echo ${c:0:7})
+#%global gitdate   20140630
+#%global commit    edfa67d26bac695b5ef9911f3cda3ff50232e35a
+#%global gitrev    %(c=%{commit}; echo ${c:0:7})
 
 Name:             ginac
-Version:          1.6.2
-Release:          10.%{gitdate}git%{gitrev}%{?dist}
+Version:          1.6.3
+#Release:          10.%{gitdate}git%{gitrev}%{?dist}
+Release:          1%{?dist}
 Summary:          C++ library for symbolic calculations
 License:          GPLv2+
 URL:              http://www.ginac.de/
-# Source:         http://www.ginac.de/%{name}-%{version}.tar.bz2
+Source0:          http://www.ginac.de/%{name}-%{version}.tar.bz2
 # Tarball was generated by following commands:
 # 1. git clone git://www.ginac.de/ginac.git ginac-%{commit}
 # 2. tar zcvf ginac-%{commit}.tar.gz ginac-%{commit}/ --exclude=.*
 ################################################################
 # Now use the snapshot link from gitweb:
 # http://www.ginac.de/ginac.git?p=ginac.git;a=snapshot;h=%{commit};sf=tgz
-Source0:          ginac-%{commit}.tar.gz
+#Source0:          ginac-%{commit}.tar.gz
 BuildRequires:    bison
 BuildRequires:    cln-devel
 BuildRequires:    cmake
@@ -61,12 +62,12 @@ simple and easy-to-use CAS-like interface to GiNaC for non-programmers, and
 the tool "viewgar" which displays the contents of GiNaC archives.
 
 %prep
-%setup -qn %{name}
+%setup -q
 # Destroy the RPATH.
-sed -i 's| @GINACLIB_RPATH@||' ginac.pc.in
+sed -i 's| @GINACLIB_RPATH@||' ginac.pc.{in,cmake}
 
 %build
-# Same as above.
+# Same as above as recommended by the upstream.
 %cmake -DCMAKE_INSTALL_RPATH=""
 %make_build
 make -C doc/tutorial/ ginac_html
@@ -98,9 +99,9 @@ fi
 %{_libdir}/*.so.*
 
 %files devel
-%doc AUTHORS ChangeLog NEWS README
+%doc AUTHORS NEWS README
 %doc doc/tutorial/ginac.html
-%{_includedir}/ginac
+%{_includedir}/ginac/
 %{_infodir}/*.info*
 %{_libdir}/*.so
 %{_libdir}/pkgconfig/ginac.pc
@@ -109,6 +110,9 @@ fi
 %{_bindir}/*
 
 %changelog
+* Mon Jan 26 2015 Christopher Meng <rpm@cicku.me> - 1.6.3-1
+- Update to 1.6.3
+
 * Sat Aug 16 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.6.2-10.20140630gitedfa67d
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_Mass_Rebuild
 
diff --git a/sources b/sources
index d4a2656..c61f0d1 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-f9fe99dffab85488e6ba66f70cd2f2c3  ginac-edfa67d26bac695b5ef9911f3cda3ff50232e35a.tar.gz
+d02b5abed584e52499729382447d997f  ginac-1.6.3.tar.bz2