diff --git a/docs/installation-instructions.rst b/docs/installation-instructions.rst
index 75bcfec7..eb9eefb1 100644
--- a/docs/installation-instructions.rst
+++ b/docs/installation-instructions.rst
@@ -53,7 +53,7 @@ Paste the following URL into the *Additional boards manager URLs* input field un
 
 ::
 
-    https://github.com/Infineon/XMC-for-Arduino/releases/latest/download/package_infineon_index.json
+    https://github.com/Infineon/XMC-for-Arduino/releases/download/latest-3.x/package_infineon_index.json
 
 .. image:: img/arduino_ide_preferences_menu.png
     :width: 600
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 779f6572..74ecfd94 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,7 +1,7 @@
 # This is a list of python packages used to generate documentation. This file is used with pip:
 # pip install --user -r requirements.txt
 #
-sphinx>=7.2.6
+sphinx>=7.2.6,<9.0.0
 sphinx-tabs
 sphinxemoji
 sphinx-rtd-theme