diff --git a/openttd.spec b/openttd.spec
index 969059f..9484056 100644
--- a/openttd.spec
+++ b/openttd.spec
@@ -1,23 +1,28 @@
 Name:          openttd
-Version:       1.10.3
+Version:       1.11.1
 Release:       1mamba
 Summary:       An Open Source clone of Transport Tycoon Deluxe
 Group:         Graphical Desktop/Applications/Games
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.openttd.org
+URL:           https://www.openttd.org
 #Source:	       http://ftp.snt.utwente.nl/pub/games/openttd/binaries/releases/%{version}/openttd-%{version}-source.tar.xz
 Source:        https://cdn.openttd.org/openttd-releases/%{version}/openttd-%{version}-source.tar.xz
 #Source:        http://binahttps://cdn.openttd.org/openttd-releases/1.9.3/openttd-1.9.3-source.tar.xzries.openttd.org/releases/0.7.3/openttd-%{version}-source.tar.bz2
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
+BuildRequires: libSDL2-devel
+BuildRequires: liballegro4-devel
+BuildRequires: libfluidsynth-devel
 BuildRequires: libfontconfig-devel
 BuildRequires: libfreetype-devel
 BuildRequires: libgcc
+BuildRequires: libicu-devel
+BuildRequires: liblzma-devel
+BuildRequires: liblzo-devel
 BuildRequires: libpng-devel
-BuildRequires: libSDL-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
@@ -26,7 +31,6 @@ BuildRequires: liblzma-devel
 Requires:      opengfx
 Requires:      opensfx
 Requires:      openttd-openmsx
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 OpenTTD is an open source clone of the Microprose game "Transport Tycoon Deluxe", a popular game originally written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it with new features.
@@ -37,12 +41,15 @@ OpenTTD is an open source clone of the Microprose game "Transport Tycoon Deluxe"
 %setup -q
 
 %build
-./configure --prefix-dir=%{_prefix} --install-dir=%{buildroot} --binary-dir=/bin
+%cmake -d build \
+   -DCMAKE_INSTALL_BINDIR=%{_bindir}
+
 %make
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-%makeinstall
+%makeinstall -C build
+
 # create dummy sample.cat (see http://wiki.openttd.org/OpenGFX_Readme#Sample.cat_error)
 mkdir %{buildroot}%{_datadir}/games/openttd/data
 touch %{buildroot}%{_datadir}/games/openttd/data/sample.cat
@@ -58,11 +65,14 @@ touch %{buildroot}%{_datadir}/games/openttd/data/sample.cat
 %dir %{_datadir}/games/openttd
 %{_datadir}/games/openttd/*
 %{_datadir}/icons/hicolor/*/apps/openttd.png
-%{_datadir}/pixmaps/openttd.32.xpm
+%{_datadir}/pixmaps/openttd.*.xpm
 %{_mandir}/man6/openttd.6*
 %doc COPYING.md
 
 %changelog
+* Sat Apr 24 2021 Automatic Build System <autodist@mambasoft.it> 1.11.1-1mamba
+- automatic version update by autodist
+
 * Tue Aug 11 2020 Automatic Build System <autodist@mambasoft.it> 1.10.3-1mamba
 - automatic version update by autodist