diff --git a/gegl-0.3.34.tar.bz2 b/gegl-0.3.34.tar.bz2
deleted file mode 100644
index 7d70934..0000000
--- a/gegl-0.3.34.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:5ca2227655ebf1ab2e252cee3eede219c758336394288ef301b93264b9411304
-size 6707964
diff --git a/gegl-0.4.0.tar.bz2 b/gegl-0.4.0.tar.bz2
new file mode 100644
index 0000000..a95f093
--- /dev/null
+++ b/gegl-0.4.0.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d04d2bfa0ff5a4bcfe7566f7418929a9c80f0109fa248ea4ff19538b3e99f0c5
+size 6762190
diff --git a/gegl.changes b/gegl.changes
index 97c42c1..2704205 100644
--- a/gegl.changes
+++ b/gegl.changes
@@ -1,3 +1,23 @@
+-------------------------------------------------------------------
+Fri Apr 27 18:11:11 UTC 2018 - bjorn.lie@gmail.com
+
+- Update to version 0.4.0:
+  + GEGL 0.4.x is a stable release series of GEGL to have a stable
+    API and ABI to go with GIMP-2.10. When the need arises to break
+    API or ABI compatibility the 0.4.x series will get its own
+    branch and unstable API experiments and development, 0.5.x will
+    happen in master. For now though master will track the 0.4.x
+    series.
+  + Core: Change GeglParamSpecSeed from int to uint to match the
+    value range of GeglRandom's seed.
+  + Operations:
+    - Ripple fixed remaining issues needed to remove legacy GIMP
+      plug-in in GIMP.
+    - Spherize, requrise transform and color-overlay moved out of
+      workshop.
+    - Ppm-load ported to GIO.
+- Rename subpackages following upstreams soname bump.
+
 -------------------------------------------------------------------
 Thu Apr 26 13:44:38 UTC 2018 - fcrozat@suse.com
 
diff --git a/gegl.spec b/gegl.spec
index 47054c9..d4d90ed 100644
--- a/gegl.spec
+++ b/gegl.spec
@@ -17,13 +17,13 @@
 
 
 Name:           gegl
-Version:        0.3.34
+Version:        0.4.0
 Release:        0
 Summary:        Generic Graphics Library
 License:        GPL-3.0-or-later AND LGPL-3.0-or-later
 Group:          Productivity/Graphics/Other
 URL:            http://gegl.org/
-Source0:        https://download.gimp.org/pub/gegl/0.3/%{name}-%{version}.tar.bz2
+Source0:        https://download.gimp.org/pub/gegl/0.4/%{name}-%{version}.tar.bz2
 BuildRequires:  ImageMagick
 BuildRequires:  SDL-devel >= 1.2.0
 BuildRequires:  enscript
@@ -69,9 +69,9 @@ BuildRequires:  pkgconfig(vapigen) >= 0.20.0
 # exists in Tumbleweed and we use it to build
 Provides:       %{name}-0_3-orig-addon = %{version}
 Obsoletes:      %{name}-0_3-orig-addon < 0.3.5
-# Since 13/02/18 (version 0.3.28) gegl-unstable is obsolete, gegl is now on "0.3" branch.
+# Since 13/02/18 (version 0.3.28) gegl-unstable is obsolete, gegl is now on "0.4" branch.
 Provides:       gegl-unstable = %{version}
-Obsoletes:      gegl-unstable < %{version}
+Obsoletes:      gegl-unstable < 0.3.28
 
 %description
 GEGL provides infrastructure to do demand based cached non destructive
@@ -79,34 +79,34 @@ image editing on larger than RAM buffers. Through babl, it provides
 support for a wide range of color models and pixel storage formats for
 input and output.
 
-%package -n %{name}-0_3
+%package -n %{name}-0_4
 Summary:        Generic Graphics Library
 Group:          System/Libraries
-Recommends:     %{name}-0_3-lang
+Recommends:     %{name}-0_4-lang
 
-%description -n %{name}-0_3
+%description -n %{name}-0_4
 GEGL provides infrastructure to do demand based cached non destructive
 image editing on larger than RAM buffers. Through babl, it provides
 support for a wide range of color models and pixel storage formats for
 input and output.
 
-%package -n libgegl-0_3-0
+%package -n libgegl-0_4-0
 Summary:        Generic Graphics Library
 # The plugins are required for the lib to be usable
 Group:          System/Libraries
-Requires:       %{name}-0_3 >= %{version}
+Requires:       %{name}-0_4 >= %{version}
 
-%description -n libgegl-0_3-0
+%description -n libgegl-0_4-0
 GEGL provides infrastructure to do demand based cached non destructive
 image editing on larger than RAM buffers. Through babl, it provides
 support for a wide range of color models and pixel storage formats for
 input and output.
 
-%package -n typelib-1_0-Gegl-0_3
+%package -n typelib-1_0-Gegl-0_4
 Summary:        Introspection bindings for the GEGL "Generic Graphics Library"
 Group:          System/Libraries
 
-%description -n typelib-1_0-Gegl-0_3
+%description -n typelib-1_0-Gegl-0_4
 GEGL provides infrastructure to do demand based cached non destructive
 image editing on larger than RAM buffers. Through babl, it provides
 support for a wide range of color models and pixel storage formats for
@@ -118,8 +118,8 @@ libgegl library.
 %package devel
 Summary:        Development files for the GEGL "Generic Graphics Library"
 Group:          Development/Libraries/C and C++
-Requires:       libgegl-0_3-0 = %{version}
-Requires:       typelib-1_0-Gegl-0_3 = %{version}
+Requires:       libgegl-0_4-0 = %{version}
+Requires:       typelib-1_0-Gegl-0_4 = %{version}
 
 %description devel
 GEGL provides infratructure to do demand based cached non destructive
@@ -137,7 +137,7 @@ image editing on larger than RAM buffers. Through babl, it provides
 support for a wide range of color models and pixel storage formats for
 input and output.
 
-%lang_package -n %{name}-0_3
+%lang_package -n %{name}-0_4
 
 %prep
 %autosetup
@@ -151,49 +151,49 @@ make %{?_smp_mflags}
 %install
 %make_install
 find %{buildroot} -type f -name "*.la" -delete -print
-%find_lang %{name}-0.3 %{?no_lang_C}
+%find_lang %{name}-0.4 %{?no_lang_C}
 
-%post -n gegl-0_3 -p /sbin/ldconfig
-%postun -n gegl-0_3 -p /sbin/ldconfig
+%post -n gegl-0_4 -p /sbin/ldconfig
+%postun -n gegl-0_4 -p /sbin/ldconfig
 
-%post -n libgegl-0_3-0 -p /sbin/ldconfig
-%postun -n libgegl-0_3-0 -p /sbin/ldconfig
+%post -n libgegl-0_4-0 -p /sbin/ldconfig
+%postun -n libgegl-0_4-0 -p /sbin/ldconfig
 
 %files
 %{_bindir}/gegl
 %{_bindir}/gegl-imgcmp
 %{_bindir}/gcut
 
-%files -n %{name}-0_3
-%dir %{_libdir}/gegl-0.3/
-%{_libdir}/gegl-0.3/*.so
-# libgegl-sc-0.3.so is a support library for the seamless-clone module
-%{_libdir}/libgegl-sc-0.3.so
-%{_libdir}/libgegl-npd-0.3.so
-%{_libdir}/gegl-0.3/grey2.json
+%files -n %{name}-0_4
+%dir %{_libdir}/gegl-0.4/
+%{_libdir}/gegl-0.4/*.so
+# libgegl-sc-0.4.so is a support library for the seamless-clone module
+%{_libdir}/libgegl-sc-0.4.so
+%{_libdir}/libgegl-npd-0.4.so
+%{_libdir}/gegl-0.4/grey2.json
 
-%files -n libgegl-0_3-0
+%files -n libgegl-0_4-0
 %license COPYING COPYING.LESSER
-%{_libdir}/libgegl-0.3.so.*
+%{_libdir}/libgegl-0.4.so.*
 
-%files -n typelib-1_0-Gegl-0_3
-%{_libdir}/girepository-1.0/Gegl-0.3.typelib
+%files -n typelib-1_0-Gegl-0_4
+%{_libdir}/girepository-1.0/Gegl-0.4.typelib
 
 %files devel
-%{_includedir}/gegl-0.3/
-%{_libdir}/libgegl-0.3.so
-%{_libdir}/pkgconfig/gegl-0.3.pc
-%{_libdir}/pkgconfig/gegl-sc-0.3.pc
-%{_datadir}/gir-1.0/Gegl-0.3.gir
+%{_includedir}/gegl-0.4/
+%{_libdir}/libgegl-0.4.so
+%{_libdir}/pkgconfig/gegl-0.4.pc
+%{_libdir}/pkgconfig/gegl-sc-0.4.pc
+%{_datadir}/gir-1.0/Gegl-0.4.gir
 %dir %{_datadir}/vala
 %dir %{_datadir}/vala/vapi
-%{_datadir}/vala/vapi/gegl-0.3.deps
-%{_datadir}/vala/vapi/gegl-0.3.vapi
+%{_datadir}/vala/vapi/gegl-0.4.deps
+%{_datadir}/vala/vapi/gegl-0.4.vapi
 
 %files doc
 %doc AUTHORS ChangeLog NEWS
 %doc %{_datadir}/gtk-doc/html/gegl/
 
-%files -n %{name}-0_3-lang -f %{name}-0.3.lang
+%files -n %{name}-0_4-lang -f %{name}-0.4.lang
 
 %changelog