diff --git a/docs/source/release-notes.rst b/docs/source/release-notes.rst
index 69168276..8d44a2d6 100644
--- a/docs/source/release-notes.rst
+++ b/docs/source/release-notes.rst
@@ -12,14 +12,13 @@ Pre-v1.0.0
 v0.9.11 (2024-xx-xx)
 --------------------
 
-- [WIP] Fix circular import issue in `ams.io`
+- Add pyproject.toml for PEP 517 and PEP 518 compliance
 
 v0.9.10 (2024-09-03)
 --------------------
 
 Hotfix of import issue in ``v0.9.9``.
 
-Features developed in ``v0.9.9``:
 - In module `MatProcessor`, add two parameters `permc_spec` and `use_umfpack` in function `build_ptdf`
 - Follow RTD's deprecation of Sphinx context injection at build time
 - In MATPOWER conversion, set devices name as None