diff --git a/CHANGELOG b/CHANGELOG
index 406d8f3..bb80798 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,4 @@
+2024-05-24: doc update [35813ba]
 2024-05-24: doc update [a6a5ac7]
 2024-05-24: update docs; more verbose example program [efbffa9]
 2024-05-23: do not install system files when building/installing as user (#27) [9664f5f]
diff --git a/docs/index.md b/docs/index.md
index 16c088a..6199174 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -1,12 +1,15 @@
 # Hantek6022API
 
-[![Build status](https://ci.appveyor.com/api/projects/status/github/Ho-Ro/Hantek6022API?branch=master&svg=true)](https://ci.appveyor.com/project/Ho-Ro/Hantek6022API/branch/master)
-[![Stability: Experimental](https://masterminds.github.io/stability/experimental.svg)](https://masterminds.github.io/stability/experimental.html)
+[![Build_Check](https://github.com/Ho-Ro/Hantek6022API/actions/workflows/build_check.yml/badge.svg)](https://github.com/Ho-Ro/Hantek6022API/actions/workflows/build_check.yml)
+[![Stability: Active](https://masterminds.github.io/stability/active.svg)](https://masterminds.github.io/stability/active.html)
+[![CodeFactor](https://www.codefactor.io/repository/github/ho-ro/hantek6022api/badge)](https://www.codefactor.io/repository/github/Ho-Ro/Hantek6022API)
 
 <img alt="Scope Visualisation Example" width="100%" src="https://raw.githubusercontent.com/Ho-Ro/Hantek6022API/main/examples/plot_from_capture.png">
 
 Hantek 6022BE Python API for Linux. This is a API for Python for the
 ultra-cheap, reasonably usable (and hackable) 6022BE DSO, with a libusb implementation via libusb-1.0 for Linux.
 
+Furthermore, there are tools for data acquisition and data analysis as well as for maintenance and calibration of the scope.
+
 For additional (interesting) details, the inquisitive reader should take two or three hours and read
 this [eevblog thread](http://www.eevblog.com/forum/testgear/hantek-6022be-20mhz-usb-dso/).