diff --git a/kig.changes b/kig.changes
index 70d12a4..003398c 100644
--- a/kig.changes
+++ b/kig.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Sat Mar 28 17:15:02 UTC 2020 - Wolfgang Bauer <wbauer@tmo.at>
+
+- Build with python3 on Factory/Tumbleweed, continue to use python2
+  on Leap for now as the older boost_python3 is not found
+  (kde#419237)
+
 -------------------------------------------------------------------
 Sun Mar 22 09:17:01 UTC 2020 - Luca Beltrame <lbeltrame@kde.org>
 
diff --git a/kig.spec b/kig.spec
index b97ea4d..017a831 100644
--- a/kig.spec
+++ b/kig.spec
@@ -29,7 +29,6 @@ Group:          Productivity/Scientific/Math
 URL:            https://edu.kde.org
 Source:         https://download.kde.org/unstable/release-service/%{version}/src/%{name}-%{version}.tar.xz
 BuildRequires:  kf5-filesystem
-BuildRequires:  python3-devel
 BuildRequires:  update-desktop-files
 BuildRequires:  cmake(KF5Archive)
 BuildRequires:  cmake(KF5ConfigWidgets)
@@ -48,11 +47,17 @@ BuildRequires:  cmake(Qt5Test) >= 5.2.0
 BuildRequires:  cmake(Qt5XmlPatterns) >= 5.2.0
 Obsoletes:      %{name}5 < %{version}
 Provides:       %{name}5 = %{version}
+%if 0%{?suse_version} > 1500
+BuildRequires:  libboost_python3-devel
+BuildRequires:  python3-devel
+%else
+BuildRequires:  libboost_python-devel
+BuildRequires:  python-devel
+%endif
 %if %{with lang}
 Source1:        https://download.kde.org/unstable/release-service/%{version}/src/%{name}-%{version}.tar.xz.sig
 Source2:        applications.keyring
 %endif
-BuildRequires:  libboost_python3-devel
 Recommends:     %{name}-lang
 
 %description
@@ -64,10 +69,14 @@ drawing mathematical figures and including them in other documents.
 %lang_package
 
 %prep
-%autosetup -p1
+%setup -q
 
 %build
+%if 0%{?suse_version} > 1500
+  %cmake_kf5 -d build
+%else
   %cmake_kf5 -d build -- -DBoost_NO_BOOST_CMAKE=ON
+%endif
   %cmake_build
 
 %install
@@ -90,8 +99,7 @@ drawing mathematical figures and including them in other documents.
 %{_kf5_mandir}/man*
 %{_kf5_plugindir}/
 %{_kf5_servicesdir}/
-# Disabled for now (kde#419237)
-# %{_kf5_sharedir}/katepart5/
+%{_kf5_sharedir}/katepart5/
 %{_kf5_sharedir}/kig/
 %{_kf5_sharedir}/kxmlgui5/