diff --git a/docs/glossary.rst b/docs/glossary.rst
index fb96089e9..1d730a165 100644
--- a/docs/glossary.rst
+++ b/docs/glossary.rst
@@ -52,6 +52,10 @@ Variables that influence kitty behavior
    files. Defaults to :file:`~/.config/kitty`. For full details of the config
    directory lookup mechanism see, :option:`kitty --config`.
 
+.. envvar:: KITTY_CACHE_DIRECTORY
+
+   Controls where kitty stores cache files. Defaults to :file:`~/.cache/kitty`
+   or :file:`~/Library/Caches/kitty` on macOS.
 
 .. envvar:: VISUAL
 
@@ -64,6 +68,11 @@ Variables that influence kitty behavior
    Same as :envvar:`VISUAL`. Used if :envvar:`VISUAL` is not set.
 
 
+.. envvar:: GLFW_IM_MODULE
+
+   Set this to ``ibus`` to enable support for IME under X11.
+
+
 Variables that kitty sets when running child programs
 
 .. envvar:: LANG