diff --git a/rpm/INSTALL.rst b/rpm/INSTALL.rst
index c42029bb26c27bb05a57ecdb0c429a69ecca234a..95abe3b86b3537b7c851b8e3531a459656051da2 100644
--- a/rpm/INSTALL.rst
+++ b/rpm/INSTALL.rst
@@ -15,14 +15,15 @@ The main steps are
 
 * Install `PostgreSQL <https://www.postgresql.org/>`_ and set up a
   database.
-* Install and configure `Apache Tomcat <https://tomcat.apache.org/>`_.
+* Install and configure `Apache Tomcat 8.5 or higher <https://tomcat.apache.org/>`_.
 * Install the MINERVA RPM.
+* Data migration from version 13.2.x and lower.
 
 
 PostgreSQL
 ----------
 
-Install PostgreSQL and initialise it with
+Install PostgreSQL and initialize it with
 
 .. code:: shell
 
@@ -58,17 +59,72 @@ Create the MINERVA database user and the database
 Apache Tomcat
 -------------
 
-Install Apache Tomcat with
+Create a new tomcat group and tomcat user
 
 .. code:: shell
 
-    yum install -y tomcat
+    sudo groupadd tomcat
+    sudo useradd -M -s /bin/nologin -g tomcat -d /opt/tomcat tomcat
 
-In ``/etc/sysconfig/tomcat``, adjust the memory settings, e.g.
+Download Tomcat Binary
 
-.. code::
+.. code:: shell
+
+    wget https://www-eu.apache.org/dist/tomcat/tomcat-8/v8.5.46/bin/apache-tomcat-8.5.46.tar.gz
+    sudo mkdir /opt/tomcat
+    sudo tar xvf apache-tomcat-8*tar.gz -C /opt/tomcat --strip-components=1
+
+Update Permissions
+
+.. code:: shell
+
+    cd /opt/tomcat
+    sudo chgrp -R tomcat /opt/tomcat
+    sudo chmod -R g+r conf
+    sudo chmod g+x conf
+    sudo chown -R tomcat webapps/ work/ temp/ logs/
+
+Install Systemd Unit File. Create a file `/etc/systemd/system/tomcat.service` (you might want to change memory settings specified in CATALINA_OPTS):
+
+    # Systemd unit file for tomcat
+    [Unit]
+    Description=Apache Tomcat Web Application Container
+    After=syslog.target network.target
 
-    JAVA_OPTS="-Xms2048M -Xmx4096M"
+    [Service]
+    Type=forking
+
+    Environment=JAVA_HOME=/usr/lib/jvm/jre
+    Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid
+    Environment=CATALINA_HOME=/opt/tomcat
+    Environment=CATALINA_BASE=/opt/tomcat
+    Environment='CATALINA_OPTS=-Xms2048M -Xmx4096M -server -XX:+UseParallelGC'
+    Environment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom'
+
+    ExecStart=/opt/tomcat/bin/startup.sh
+    ExecStop=/bin/kill -15 $MAINPID
+
+    User=tomcat
+    Group=tomcat
+    UMask=0007
+    RestartSec=10
+    Restart=always
+
+    [Install]
+    WantedBy=multi-user.target
+
+Reload Systemd to load the Tomcat unit file
+
+.. code:: shell
+
+    sudo systemctl daemon-reload
+
+Enable and start Tomcat
+
+.. code:: shell
+
+    sudo systemctl enable tomcat
+    sudo systemctl start tomcat
 
 Make sure to open the port (by default port 8080) to allow incoming
 connections, e.g. using ``firewalld`` this can be accomplished with
@@ -83,14 +139,6 @@ connections, e.g. using ``firewalld`` this can be accomplished with
     hardcoded, therefore make sure the MINERVA cannot be accessed from
     distrusted hosts until the password was changed.
 
-Enable and start Tomcat
-
-.. code:: shell
-
-    systemctl enable tomcat
-    systemctl start tomcat
-
-
 MINERVA
 -------
 
@@ -118,3 +166,20 @@ e.g. on a local network this could be
 Login with the username ``admin`` and the password ``admin``. Click on
 the ``INFO`` tab in the left panel, and click on ``MANUAL`` to get
 more information about administrating and using MINERVA.
+
+Migration from MINERVA 13.2 and lower
+-------
+
+MINERVA 13.2 and earlier versions used tomcat7 that was in most cases installed
+from rpm. Starting from MINERVA 14.0.0 tomcat8 or higher is required. Before
+you install new version of minerva you would need to remove old tomcat:
+.. code::
+  sudo yum remove tomcat
+
+And install new tomcat manually as described in the section above. Tomcat7
+stored data in different place than manually installed tomcat8. Move the data
+to tomcat8 folder:
+
+.. code::
+  sudo mv /var/lib/tomcat/webapps/map_images /opt/tomcat/webapps/
+  sudo mv /var/lib/tomcat/webapps/minerva-big /opt/tomcat/webapps/
diff --git a/rpm/buildrpm.sh b/rpm/buildrpm.sh
index e425be4ede226c578132a70bf6a68a49d42a845c..712723a8c464098f17e465258ab17f807da29dcb 100755
--- a/rpm/buildrpm.sh
+++ b/rpm/buildrpm.sh
@@ -36,7 +36,7 @@ if [[ "$RPMBUILD_TEMP" =~ ' ' ]]; then
 fi
 
 # current date (for automatic changelog)
-CURDATE=$(date +"%a %b %d %Y")
+CURDATE=$(LC_ALL=C date +"%a %b %d %Y")
 
 # clean build directories
 rm -rf "$RPMBUILD_TEMP"
diff --git a/rpm/minerva.spec.in b/rpm/minerva.spec.in
index 555ba6d81f680d1020472e63f27393518da7c358..d1819417b77b5c1c22993a85b93a431d31ca97a2 100644
--- a/rpm/minerva.spec.in
+++ b/rpm/minerva.spec.in
@@ -7,7 +7,7 @@ License:        AGPLv3
 URL:            http://r3lab.uni.lu/web/minerva-website/
 Source0:        https://git-r3lab.uni.lu/piotr.gawron/minerva/repository/archive.tar.gz?ref=v%{version}
 
-Requires:       tomcat, postgresql
+Conflicts:      tomcat < 8.0
 BuildArch:      noarch
 
 %description
@@ -18,7 +18,10 @@ used and managed via a webbrowser.
 %preun -p /bin/bash
 if [ $1 == 1 ]; then
     # remove old unpacked ("exploded") directory of war file
+    # version 13.2 and below
     rm -rf %{_sharedstatedir}/tomcat/webapps/%{name}
+    # version 14.0 and upper
+    rm -rf /opt/tomcat/webapps/%{name}
 fi
 
 %install
@@ -27,15 +30,15 @@ mkdir -p %{buildroot}/%{_datadir}/%{name}
 install -m 0644 %{name}.war %{buildroot}/%{_datadir}/%{name}/%{name}.war
 mkdir -p %{buildroot}/%{_sysconfdir}/logrotate.d
 install -m 0644 logrotate_minerva %{buildroot}/%{_sysconfdir}/logrotate.d/minerva
-mkdir -p %{buildroot}/%{_sharedstatedir}/tomcat/webapps
-ln -s %{_datadir}/%{name}/%{name}.war %{buildroot}/%{_sharedstatedir}/tomcat/webapps/
+mkdir -p %{buildroot}/opt/tomcat/webapps
+ln -s %{_datadir}/%{name}/%{name}.war %{buildroot}/opt/tomcat/webapps/
 
 %files
 %defattr(-,root,root,-)
 %doc README.md CHANGELOG INSTALL.rst
 %{_datadir}/%{name}/%{name}.war
 %config(noreplace) %{_sysconfdir}/logrotate.d/minerva
-%attr(-,tomcat,tomcat) %{_sharedstatedir}/tomcat/webapps/%{name}.war
+%attr(-,tomcat,tomcat) /opt/tomcat/webapps/%{name}.war
 
 %changelog
 * __DATE__ - %{version}-%{release}