diff --git a/GLFW-4.0-sketchbook.md b/GLFW-4.0-sketchbook.md
index 16617ee..835ef5f 100644
--- a/GLFW-4.0-sketchbook.md
+++ b/GLFW-4.0-sketchbook.md
@@ -10,6 +10,7 @@
 - Possible adaption to positioning-less Wayland
 - Cleanup of float vs. double
 - Cleanup of signed vs. unsigned
+- Rename `GLFW_CLIENT_API` to `GLFW_CONTEXT_TYPE`
 - Removal of `GLFW_CURSOR_HIDDEN`
 - Change OS X prefix to `OSX`
 - Separate video mode from window