diff --git a/.gitignore b/.gitignore
index 3575d75..1e07016 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@
 /libbytesize-1.0.tar.gz
 /libbytesize-1.1.tar.gz
 /libbytesize-1.2.tar.gz
+/libbytesize-1.3.tar.gz
diff --git a/libbytesize.spec b/libbytesize.spec
index 7f41d61..8dc412f 100644
--- a/libbytesize.spec
+++ b/libbytesize.spec
@@ -1,15 +1,24 @@
 %define realname bytesize
+%define with_python2 1
 %define with_python3 1
 %define with_gtk_doc 1
 
-%if ! 0%{?fedora} && 0%{?rhel} <= 7
+%if (! 0%{?fedora} && 0%{?rhel} <= 7) || %{with_python3} == 0
 %define with_python3 0
-%define configure_opts --without-python3
+%define python3_opts --without-python3
 %endif
 
+# python2 is not available on RHEL > 7 and not needed on Fedora > 28
+%if 0%{?rhel} > 7 || 0%{?fedora} > 28 || %{with_python2} == 0
+%define with_python2 0
+%define python2_opts --without-python2
+%endif
+
+%define configure_opts %{?python3_opts} %{?python2_opts}
+
 Name:        libbytesize
-Version:     1.2
-Release:     4%{?dist}
+Version:     1.3
+Release:     1%{?dist}
 Summary:     A library for working with sizes in bytes
 License:     LGPLv2+
 URL:         https://github.com/storaged-project/libbytesize
@@ -20,7 +29,9 @@ BuildRequires: gmp-devel
 BuildRequires: mpfr-devel
 BuildRequires: pcre-devel
 BuildRequires: gettext-devel
+%if %{with_python2}
 BuildRequires: python2-devel
+%endif
 %if %{with_python3}
 BuildRequires: python3-devel
 %endif
@@ -42,6 +53,7 @@ Requires: %{name}%{?_isa} = %{version}-%{release}
 This package contains header files and pkg-config files needed for development
 with the libbytesize library.
 
+%if %{with_python2}
 %package -n python2-%{realname}
 Summary: Python 2 bindings for libbytesize
 %{?python_provide:%python_provide python2-%{realname}}
@@ -52,6 +64,7 @@ Requires: python2-six
 %description -n python2-%{realname}
 This package contains Python 2 bindings for libbytesize making the use of
 the library from Python 2 easier and more convenient.
+%endif
 
 %if %{with_python3}
 %package -n python3-%{realname}
@@ -96,9 +109,11 @@ find %{buildroot} -type f -name "*.la" | xargs %{__rm}
 %{_datadir}/gtk-doc/html/libbytesize
 %endif
 
+%if %{with_python2}
 %files -n python2-%{realname}
 %dir %{python2_sitearch}/bytesize
 %{python2_sitearch}/bytesize/*
+%endif
 
 %if %{with_python3}
 %files -n python3-%{realname}
@@ -108,6 +123,14 @@ find %{buildroot} -type f -name "*.la" | xargs %{__rm}
 %endif
 
 %changelog
+* Thu Apr 19 2018 Vojtech Trefny <vtrefny@redhat.com> - 1.3-1
+- Allow building libbytesize without Python 2 support (vtrefny)
+- Sync spec with downstream (vtrefny)
+- Add gcc to BuildRequires (vtrefny)
+- Fix links for documentation and GH project (vtrefny)
+- Add a HACKING.rst file (vpodzime)
+- Do not segfault when trying to bs_size_free NULL (vtrefny)
+
 * Wed Feb 21 2018 Vojtech Trefny <vtrefny@redhat.com> - 1.2-4
 - Add gcc to BuildRequires (vtrefny)
 
diff --git a/sources b/sources
index 5c228bb..5929a38 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (libbytesize-1.2.tar.gz) = d61ff297d1f533aee120bfcfdc3969c6a87428da322a6410707c301ff9b005da5d4f813ea15282eab5eb8435b009646d2cff29ac5247e2664af3ecaef54867a6
+SHA512 (libbytesize-1.3.tar.gz) = a8e5b5d59d0a97ae52a2c0f437c4d7fd8afc8249762be99027e3beeadc6c54ad52a09c1d30e66466b99496fcf3419fa799d0fcccf61c0661b3e9cff48d0054af