diff --git a/docs/compat.md b/docs/compat.md
index 5072d5c1..e85d723e 100644
--- a/docs/compat.md
+++ b/docs/compat.md
@@ -158,6 +158,12 @@ less than the actual scale.
 
 [fractional-scale-v1]: https://wayland.app/protocols/fractional-scale-v1
 
+GLFW uses the [pointer-gestures-unstable-v1][] protocol to handle trackpad
+pinch and rotate gestures. If the running compositor does not support this
+protocol, trackpad pinch and rotate gestures will not be emitted.
+
+[pointer-gestures-unstable-v1]: https://wayland.app/protocols/pointer-gestures-unstable-v1
+
 
 ## GLX extensions {#compat_glx}