diff --git a/README.md b/README.md
index fe86bf4b..e9f7dc3b 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ Picrin is a lightweight scheme implementation intended to comply with full R7RS
 | 3.2 Disjointness of types | yes | |
 | 3.3 External representations | | |
 | 3.4 Storage model | yes | |
-| 3.5 Proper tail recursion | incomplete | TODO: apply, call/cc |
+| 3.5 Proper tail recursion | yes | |
 | 4.1.1 Variable references | yes | |
 | 4.1.2 Literal expressions | yes | |
 | 4.1.3 Procedure calls | yes | In picrin `()` is self-evaluating |