diff --git a/localization/autoware_ekf_localizer/CHANGELOG.rst b/localization/autoware_ekf_localizer/CHANGELOG.rst
deleted file mode 100644
index b8e74c53..00000000
--- a/localization/autoware_ekf_localizer/CHANGELOG.rst
+++ /dev/null
@@ -1,63 +0,0 @@
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Changelog for package autoware_ekf_localizer
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-0.40.0 (2024-12-12)
--------------------
-* Merge branch 'main' into release-0.40.0
-* Revert "chore(package.xml): bump version to 0.39.0 (`#9587 <https://github.com/autowarefoundation/autoware.universe/issues/9587>`_)"
-  This reverts commit c9f0f2688c57b0f657f5c1f28f036a970682e7f5.
-* fix: fix ticket links in CHANGELOG.rst (`#9588 <https://github.com/autowarefoundation/autoware.universe/issues/9588>`_)
-* chore(package.xml): bump version to 0.39.0 (`#9587 <https://github.com/autowarefoundation/autoware.universe/issues/9587>`_)
-  * chore(package.xml): bump version to 0.39.0
-  * fix: fix ticket links in CHANGELOG.rst
-  * fix: remove unnecessary diff
-  ---------
-  Co-authored-by: Yutaka Kondo <yutaka.kondo@youtalk.jp>
-* fix: fix ticket links in CHANGELOG.rst (`#9588 <https://github.com/autowarefoundation/autoware.universe/issues/9588>`_)
-* fix(cpplint): include what you use - localization (`#9567 <https://github.com/autowarefoundation/autoware.universe/issues/9567>`_)
-* fix(autoware_ekf_localizer): publish `processing_time_ms` (`#9443 <https://github.com/autowarefoundation/autoware.universe/issues/9443>`_)
-  Fixed to publish processing_time_ms
-* 0.39.0
-* update changelog
-* Merge commit '6a1ddbd08bd' into release-0.39.0
-* fix: fix ticket links to point to https://github.com/autowarefoundation/autoware.universe (`#9304 <https://github.com/autowarefoundation/autoware.universe/issues/9304>`_)
-* fix: fix ticket links to point to https://github.com/autowarefoundation/autoware.universe (`#9304 <https://github.com/autowarefoundation/autoware.universe/issues/9304>`_)
-* chore(package.xml): bump version to 0.38.0 (`#9266 <https://github.com/autowarefoundation/autoware.universe/issues/9266>`_) (`#9284 <https://github.com/autowarefoundation/autoware.universe/issues/9284>`_)
-  * unify package.xml version to 0.37.0
-  * remove system_monitor/CHANGELOG.rst
-  * add changelog
-  * 0.38.0
-  ---------
-* fix(autoware_ekf_localizer): remove `timer_tf\_` (`#9244 <https://github.com/autowarefoundation/autoware.universe/issues/9244>`_)
-  Removed timer_tf\_
-* Contributors: Esteve Fernandez, Fumiya Watanabe, M. Fatih Cırıt, Ryohsuke Mitsudome, SakodaShintaro, Yutaka Kondo
-
-0.39.0 (2024-11-25)
--------------------
-* Merge commit '6a1ddbd08bd' into release-0.39.0
-* fix: fix ticket links to point to https://github.com/autowarefoundation/autoware.universe (`#9304 <https://github.com/autowarefoundation/autoware.universe/issues/9304>`_)
-* fix: fix ticket links to point to https://github.com/autowarefoundation/autoware.universe (`#9304 <https://github.com/autowarefoundation/autoware.universe/issues/9304>`_)
-* chore(package.xml): bump version to 0.38.0 (`#9266 <https://github.com/autowarefoundation/autoware.universe/issues/9266>`_) (`#9284 <https://github.com/autowarefoundation/autoware.universe/issues/9284>`_)
-  * unify package.xml version to 0.37.0
-  * remove system_monitor/CHANGELOG.rst
-  * add changelog
-  * 0.38.0
-  ---------
-* fix(autoware_ekf_localizer): remove `timer_tf\_` (`#9244 <https://github.com/autowarefoundation/autoware.universe/issues/9244>`_)
-  Removed timer_tf\_
-* Contributors: Esteve Fernandez, SakodaShintaro, Yutaka Kondo
-
-0.38.0 (2024-11-08)
--------------------
-* unify package.xml version to 0.37.0
-* refactor(localization_util)!: prefix package and namespace with autoware (`#8922 <https://github.com/autowarefoundation/autoware.universe/issues/8922>`_)
-  add autoware prefix to localization_util
-* refactor(ekf_localizer)!: prefix package and namespace with autoware (`#8888 <https://github.com/autowarefoundation/autoware.universe/issues/8888>`_)
-  * import lanelet2_map_preprocessor
-  * move headers to include/autoware/efk_localier
-  ---------
-* Contributors: Masaki Baba, Yutaka Kondo
-
-0.26.0 (2024-04-03)
--------------------