diff --git a/sane-backends.spec b/sane-backends.spec
index bf6aef6..71204ee 100644
--- a/sane-backends.spec
+++ b/sane-backends.spec
@@ -14,7 +14,7 @@
 Summary: Scanner access software
 Name: sane-backends
 Version: 1.0.32
-Release: 1%{?dist}
+Release: 2%{?dist}
 # lib/ is LGPLv2+, backends are GPLv2+ with exceptions
 # Tools are GPLv2+, docs are public domain
 # see LICENSE for details
@@ -38,37 +38,39 @@ Patch2: sane-backends-1.0.23-sane-config-multilib.patch
 
 URL: http://www.sane-project.org
 
+BuildRequires: gettext
 # gcc is no longer in buildroot by default
 BuildRequires: gcc
 # genesys backend is not written in C++, so it is needed as buildrequire
 BuildRequires: gcc-c++
-# uses make
-BuildRequires: make
-
+BuildRequires: gphoto2-devel
 BuildRequires: %{_bindir}/latex
+BuildRequires: libieee1284-devel
+BuildRequires: libjpeg-devel
+BuildRequires: libpng-devel
+BuildRequires: libtiff-devel
 %if %libusb1
 BuildRequires: libusbx-devel
 %else
 BuildRequires: libusb-devel
 %endif
-BuildRequires: libieee1284-devel
-BuildRequires: libjpeg-devel
-BuildRequires: libpng-devel
-BuildRequires: libtiff-devel
 BuildRequires: libv4l-devel
-BuildRequires: gettext
-BuildRequires: gphoto2-devel
+# uses make
+BuildRequires: make
+# pixma backend generates header files during build via python script
+BuildRequires: python3
 BuildRequires: systemd-devel
 BuildRequires: systemd
 # needed by macros in rpm scriptlets
 BuildRequires: systemd-rpm-macros
+
 Requires: libpng
-Requires: systemd >= 196
-Requires: systemd-udev >= 196
-Requires: sane-backends-libs%{?_isa} = %{?epoch:%{epoch}:}%{version}-%{release}
 %if 0%{?fedora} >= 32 || 0%{?rhel} > 8
 Requires: sane-airscan
 %endif
+Requires: sane-backends-libs%{?_isa} = %{?epoch:%{epoch}:}%{version}-%{release}
+Requires: systemd >= 196
+Requires: systemd-udev >= 196
 
 # workaround for Brother scanners, which drivers are built with old libnsl
 # it is ignored by DNF, but it seems GUI installation apps should offer it
@@ -100,21 +102,21 @@ want to access scanners.
 
 %package devel
 Summary: SANE development toolkit
-Requires: sane-backends = %{?epoch:%{epoch}:}%{version}-%{release}
-Requires: sane-backends-libs%{?_isa} = %{?epoch:%{epoch}:}%{version}-%{release}
-%if %needs_multilib_quirk
-Requires: sane-backends-drivers-scanners%{?_isa} = %{?epoch:%{epoch}:}%{version}-%{release}
-Requires: sane-backends-drivers-cameras%{?_isa} = %{?epoch:%{epoch}:}%{version}-%{release}
-%endif
+Requires: libieee1284-devel
+Requires: libjpeg-devel
+Requires: libtiff-devel
 %if %libusb1
 Requires: libusbx-devel
 %else
 Requires: libusb-devel
 %endif
-Requires: libieee1284-devel
-Requires: libjpeg-devel
-Requires: libtiff-devel
 Requires: pkgconfig
+Requires: sane-backends = %{?epoch:%{epoch}:}%{version}-%{release}
+%if %needs_multilib_quirk
+Requires: sane-backends-drivers-scanners%{?_isa} = %{?epoch:%{epoch}:}%{version}-%{release}
+Requires: sane-backends-drivers-cameras%{?_isa} = %{?epoch:%{epoch}:}%{version}-%{release}
+%endif
+Requires: sane-backends-libs%{?_isa} = %{?epoch:%{epoch}:}%{version}-%{release}
 
 %description devel
 This package contains libraries and header files for writing Scanner Access Now
@@ -142,6 +144,7 @@ This package contains backend drivers to access digital cameras through SANE.
 Summary: Scanner network daemon
 Requires: sane-backends = %{?epoch:%{epoch}:}%{version}-%{release}
 Requires: sane-backends-libs%{?_isa} = %{?epoch:%{epoch}:}%{version}-%{release}
+
 Requires(pre): shadow-utils
 
 %description daemon
@@ -427,6 +430,9 @@ exit 0
 %{_unitdir}/saned@.service
 
 %changelog
+* Thu Feb 18 2021 Zdenek Dohnal <zdohnal@redhat.com> - 1.0.32-2
+- python3 is now needed for building pixma backend
+
 * Tue Feb 16 2021 Zdenek Dohnal <zdohnal@redhat.com> - 1.0.32-1
 - 1928484 - sane-backends-1.0.32 is available