diff --git a/docs/changelog.txt b/docs/changelog.txt
index b5e6d3f97..d0c7b1abb 100644
--- a/docs/changelog.txt
+++ b/docs/changelog.txt
@@ -51,6 +51,7 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
 - ``Gui::getDFViewscreen``: returns the topmost underlying DF viewscreen
 
 ## Lua
+- Removed ``os.execute()`` and ``io.popen()`` built-in functions
 - ``gui.View``: ``visible`` and ``active`` can now be functions that return a boolean
 - ``widgets.Panel``: new attributes to control window dragging and resizing with mouse or keyboard
 - ``widgets.Window``: Panel subclass with attributes preset for top-level windows