diff --git a/gnuradio.changes b/gnuradio.changes
index 00435d9..f55b338 100644
--- a/gnuradio.changes
+++ b/gnuradio.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Thu Sep 19 16:37:47 UTC 2019 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
+
+- Use pkgconfig(py3cairo) to specify pycairo dependency, package got
+  renamed between Leap 15.x and TW, and pkgconfig(py3cairo) fits both.
+- Add log4cpp-devel to -devel Requires, always required by gr-runtime.
+
 -------------------------------------------------------------------
 Wed Sep 18 20:16:50 UTC 2019 - Martin Hauke <mardnh@gmx.de>
 
diff --git a/gnuradio.spec b/gnuradio.spec
index fc4e021..f025f60 100644
--- a/gnuradio.spec
+++ b/gnuradio.spec
@@ -70,7 +70,6 @@ BuildRequires:  python3-gobject-cairo
 BuildRequires:  python3-mako >= 0.9.1
 BuildRequires:  python3-numpy
 BuildRequires:  python3-pyaml >= 3.11
-BuildRequires:  python3-pycairo
 BuildRequires:  python3-qt5-devel
 BuildRequires:  python3-six
 BuildRequires:  qwt6-qt5-devel
@@ -80,6 +79,7 @@ BuildRequires:  update-desktop-files
 BuildRequires:  pkgconfig(codec2)
 BuildRequires:  pkgconfig(libusb-1.0)
 BuildRequires:  pkgconfig(libxml-2.0)
+BuildRequires:  pkgconfig(py3cairo)
 BuildRequires:  pkgconfig(volk) >= 2.0
 BuildRequires:  typelib(Gtk) = 3.0
 BuildRequires:  typelib(PangoCairo) = 1.0
@@ -117,6 +117,7 @@ Summary:        Deveopment files for GNU Radio
 Group:          Development/Libraries/C and C++
 Requires:       %{name} = %{version}
 Requires:       gmp-devel
+Requires:       log4cpp-devel
 
 %description    devel
 GNU Radio is a collection of software that when combined with minimal