diff --git a/README.md b/README.md
index 6912bac..2b27101 100644
--- a/README.md
+++ b/README.md
@@ -139,7 +139,7 @@ For roadmap to 1.0.0 see [issues](https://todo.sr.ht/~retropikzel/r7rs-pffi?sear
 | Skint        | X         |              |           |                   |                    |                       |                      |               |                   |                   |                  |                      |                      | X                | X                   | X                      | X               | X                |             |                      |
 | Stklos       | X         | X            | X         | X                 | X                  | X                     |                      | X             | X                 |                   |                  |                      |                      | X                | X                   | X                      | X               | X                |             |                      |
 | tr7          |           |              |           |                   |                    |                       |                      |               |                   |                   |                  |                      |                      | X                | X                   | X                      | X               | X                |             |                      |
-| Ypsilon      |           |              |           |                   |                    |                       |                      |               |                   |                   |                  |                      |                      | X                | X                   | X                      | X               | X                |             |                      |
+| Ypsilon      | X         | X            | X         | X                 | X                  | X                     | X                    | X             | X                 | X                 | X                | X                    | X                    | X                | X                   | X                      | X               | X                | X           | X                    |
 
 ###  Not started
 <a name="not-started"></a>