diff --git a/calibre.spec b/calibre.spec
index d5fe49e..1793f87 100644
--- a/calibre.spec
+++ b/calibre.spec
@@ -1,5 +1,5 @@
 Name:          calibre
-Version:       5.44.0
+Version:       6.3.0
 Release:       1mamba
 Summary:       A free and open source e-book library management application
 Group:         Graphical Desktop/Applications/Multimedia
@@ -19,10 +19,8 @@ Patch6:        calibre-5.22.1-python-zeroconf-0.36.7.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libfontconfig-devel
 BuildRequires: libfreetype-devel
 BuildRequires: libgcc
-BuildRequires: libglib-devel
 BuildRequires: libglvnd-devel
 BuildRequires: libhunspell-devel
 BuildRequires: libhyphen-devel
@@ -33,9 +31,10 @@ BuildRequires: libpodofo-devel
 BuildRequires: libpython310-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libstemmer-devel
+BuildRequires: libuchardet-devel
 BuildRequires: libusb-devel
-BuildRequires: libz-devel
-BuildRequires: qt5-qtbase-devel
+BuildRequires: libxkbcommon-devel
+BuildRequires: qt6-qtbase-devel
 ## AUTOBUILDREQ-END
 BuildRequires: libpython310-devel
 BuildRequires: libpodofo-devel >= 0.9.3
@@ -54,12 +53,11 @@ BuildRequires: python-sip-py310
 BuildRequires: python-six-py310
 BuildRequires: python-soupsieve-py310
 BuildRequires: python-webencodings-py310
-BuildRequires: PyQt5-devel
-BuildRequires: PyQt5-py310
-BuildRequires: pyqtwebengine-py310
+BuildRequires: PyQt6-py310
+BuildRequires: PyQt6-WebEngine-py310 >= 6.3.1
 BuildRequires: PyQt-builder-py310
-Requires:      PyQt5-py3 >= 5.15.2
-Requires:      pyqtwebengine-py310 >= 5.13.0
+Requires:      PyQt6-py310 >= 6.3.1
+Requires:      PyQt6-WebEngine-py310 >= 6.3.1
 Requires:      python310
 Requires:      python-apsw-py310
 Requires:      python-beautifulsoup4-py310
@@ -145,6 +143,9 @@ sed -i "s|bin/env python3$|bin/env python3.10|" %{buildroot}%{_bindir}/*
 %{python310_sitearch}/init_calibre.py
 
 %changelog
+* Tue Aug 30 2022 Automatic Build System <autodist@mambasoft.it> 6.3.0-1mamba
+- automatic version update by autodist
+
 * Fri Jun 17 2022 Automatic Build System <autodist@mambasoft.it> 5.44.0-1mamba
 - automatic version update by autodist