diff --git a/opencv.spec b/opencv.spec
index f67dc51..d2d60b8 100644
--- a/opencv.spec
+++ b/opencv.spec
@@ -90,7 +90,6 @@ BuildRequires:  pkgconfig(nppc-%{?_cuda_rpm_version})
 }
 %{?with_eigen2:BuildRequires:  eigen2-devel}
 %{?with_eigen3:BuildRequires:  eigen3-devel}
-BuildRequires:  gtk3-devel
 BuildRequires:  libtheora-devel
 BuildRequires:  libvorbis-devel
 %if 0%{?fedora} || 0%{?rhel} > 7
@@ -105,7 +104,6 @@ BuildRequires:  libpng-devel
 BuildRequires:  libtiff-devel
 BuildRequires:  libGL-devel
 BuildRequires:  libv4l-devel
-BuildRequires:  gtkglext-devel
 BuildRequires:  OpenEXR-devel
 %{?with_openni:
 BuildRequires:  openni-devel
@@ -119,6 +117,7 @@ BuildRequires:  pkgconfig
 BuildRequires:  python3-devel
 BuildRequires:  python3-numpy
 BuildRequires:  pylint
+BuildRequires:  python3-flake8
 BuildRequires:  swig >= 1.3.24
 %{?with_ffmpeg:BuildRequires:  ffmpeg-devel >= 0.4.9}
 %if 0%{?fedora} || 0%{?rhel} > 7
@@ -134,10 +133,10 @@ BuildRequires:  tesseract-devel
 BuildRequires:  protobuf-devel
 BuildRequires:  gdal-devel
 BuildRequires:  glog-devel
-BuildRequires:  doxygen
+#BuildRequires:  doxygen
 BuildRequires:  python3-beautifulsoup4
 #for doc/doxygen/bib2xhtml.pl
-BuildRequires:  perl-open
+#BuildRequires:  perl-open
 BuildRequires:  gflags-devel
 BuildRequires:  SFML-devel
 BuildRequires:  libucil-devel
@@ -483,7 +482,15 @@ popd
 %{_libdir}/libopencv_xphoto.so.%{abiver}*
 
 %changelog
-* Sun Jun 14 2020 Adrian Reber <adrian@lisas.de> - 4.3.0-4
+* Sun Jun 21 2020 Sérgio Basto <sergio@serjux.com> - 4.3.0-4
+- Readd flake8 build requirement
+- Fix build because pangox has been retired for F33 so we need remove the BR
+  gtkglext
+- Also remove all gtk stuff (we have to choose between gtk or qt when build opencv)
+  https://answers.opencv.org/question/215066/gtk-or-qt-when-build-opencv/
+- Doxygen requires gtk2, disabling for now
+
+* Sun Jun 14 2020 Adrian Reber <adrian@lisas.de>
 - Rebuilt for protobuf 3.12
 
 * Tue Jun 02 2020 Orion Poplawski <orion@nwra.com> - 4.3.0-3