diff --git a/qscintilla.spec b/qscintilla.spec
index 36b0787..0401af2 100644
--- a/qscintilla.spec
+++ b/qscintilla.spec
@@ -1,5 +1,5 @@
 Name:          qscintilla
-Version:       2.13.3
+Version:       2.13.4
 Release:       1mamba
 Summary:       A port to Qt of Neil Hodgson's Scintilla C++ editor control
 Group:         Development/Tools
@@ -40,7 +40,7 @@ Group:         Development/Libraries
 Summary:       Libraries and headers for %{name}
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 Provides:      QScintilla2-devel
-Obsoletes:     QScintilla2-devel
+Obsoletes:     QScintilla2-devel < 2.21.0
 
 %description devel
 QScintilla is a port to Qt of the Scintilla editing component.
@@ -55,6 +55,8 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 QScintilla is a port to Qt of the Scintilla editing component.
 This package contains QScintilla designer plugin.
 
+#% debug_package
+
 %prep
 %setup -q -n QScintilla_src-%{version}
 
@@ -64,10 +66,12 @@ cd src
 %make
 cd ..
 
+%ifnarch aarch64
 cd designer
 %{_qt5_qmake} designer.pro
 %make
 cd ..
+%endif
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -75,8 +79,10 @@ cd ..
 %makeinstall -C src \
   INSTALL_ROOT=%{buildroot}
 
+%ifnarch aarch64
 %makeinstall -C designer \
   INSTALL_ROOT=%{buildroot}
+%endif
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -100,11 +106,16 @@ cd ..
 %doc NEWS
 %doc doc/html doc/Scintilla example
 
+%ifnarch aarch64
 %files designer
 %defattr(-,root,root)
 %{_qt5_prefix}/plugins/designer/libqscintillaplugin.so
+%endif
 
 %changelog
+* Sun Jan 29 2023 Automatic Build System <autodist@mambasoft.it> 2.13.4-1mamba
+- automatic version update by autodist
+
 * Sun May 15 2022 Automatic Build System <autodist@mambasoft.it> 2.13.3-1mamba
 - automatic version update by autodist