diff --git a/doc/main/tools/index.rst b/doc/main/tools/index.rst
index 4da5197..7172d2d 100644
--- a/doc/main/tools/index.rst
+++ b/doc/main/tools/index.rst
@@ -25,6 +25,10 @@ Timing tools
 Linear algebra tools
 --------------------
 
+.. versionchanged:: 3.3
+
+    These tools were previously located in the ``pybricks.geometry`` module.
+
 .. pybricks-requirements:: stm32-float
 
 .. autoclass:: pybricks.tools.Matrix