diff --git a/src/bindings/mono/eina_mono/eina_promises.cs b/src/bindings/mono/eina_mono/eina_promises.cs
index dc8642aeaa..2d0f99d991 100644
--- a/src/bindings/mono/eina_mono/eina_promises.cs
+++ b/src/bindings/mono/eina_mono/eina_promises.cs
@@ -70,6 +70,8 @@ static internal class PromiseNativeMethods
 /// Promises act as placeholders for a value that may be available in the future.
 ///
 /// With a Promise you can attach futures to it, which will be used to notify of the value being available.
+///
+/// (Since Efl 1.23)
 /// </summary>
 public class Promise : IDisposable
 {