diff --git a/deploy_checkit_tiff/add_dnx_mappings/README.txt b/deploy_checkit_tiff/add_dnx_mappings/README.txt
index 2d35052988a4f745d6e218bd0108de351f3f3755..d5841958d31083f5d542f84fc7ce8f671f23226a 100644
--- a/deploy_checkit_tiff/add_dnx_mappings/README.txt
+++ b/deploy_checkit_tiff/add_dnx_mappings/README.txt
@@ -8,14 +8,14 @@ How to automatically add Mappings between extracted Technical Metadata and DNX S
 == Prerequisites
 
 * Desktop environment
-* Perl
-* Perl module (download at https://metacpan.org/pod/Selenium::Remote::Driver)
+* Perl programming language
+* Selenium Perl module (download at https://metacpan.org/pod/Selenium::Remote::Driver)
 * Chrome browser (download at https://www.google.com/intl/de_de/chrome/)
-* Selenium browser driver driver for the Chrome version that is installed on the system (download at https://sites.google.com/chromium.org/driver/, via https://www.seleniumhq.org/download/)
+* Chrome driver compatible with the installed Chrome browser (download at https://sites.google.com/chromium.org/driver/)
 
-== How to install on Debian 10 (Buster)
-* sudo apt install perl chromium cpan unzip
-* cpan install Selenium::Remote::Driver
+== How to install on Debian 11 (Buster)
+* sudo apt install perl chromium cpanminus unzip
+* cpanm Selenium::Remote::Driver
 * check Chromium version (i.e. "91.x.xxxx.xxx") --> download coresponding 'chromedriver_linux64.zip' from https://sites.google.com/chromium.org/driver/ (Downloads)
 * unzip chromedriver_linux64.zip