diff --git a/.all-contributorsrc b/.all-contributorsrc
index 76c2c56a..1eb0df8b 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -157,7 +157,8 @@
         "translation",
         "review",
         "promotion",
-        "mentoring"
+        "mentoring",
+        "security"
       ]
     },
     {
diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 63077a75..0fee571b 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -43,7 +43,7 @@
       <td align="center" valign="top" width="20%"><a href="https://github.com/RichardScottOZ"><img src="https://avatars.githubusercontent.com/u/72196131?v=4?s=75" width="75px;" alt="RichardScottOZ"/><br /><sub><b>RichardScottOZ</b></sub></a><br /><a href="https://github.com/bjlittle/geovista/commits?author=RichardScottOZ" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="20%"><a href="https://wx4stg.com"><img src="https://avatars.githubusercontent.com/u/83480577?v=4?s=75" width="75px;" alt="Sam Gardner"/><br /><sub><b>Sam Gardner</b></sub></a><br /><a href="#ideas-wx4stg" title="Ideas, Planning, & Feedback">🤔</a> <a href="#promotion-wx4stg" title="Promotion">📣</a></td>
       <td align="center" valign="top" width="20%"><a href="http://emps.exeter.ac.uk/mathematics/staff/sit204"><img src="https://avatars.githubusercontent.com/u/10164528?v=4?s=75" width="75px;" alt="Stephen Thomson"/><br /><sub><b>Stephen Thomson</b></sub></a><br /><a href="#example-sit23" title="Examples">💡</a> <a href="#video-sit23" title="Videos">📹</a> <a href="#promotion-sit23" title="Promotion">📣</a></td>
-      <td align="center" valign="top" width="20%"><a href="https://github.com/tkoyama010"><img src="https://avatars.githubusercontent.com/u/7513610?v=4?s=75" width="75px;" alt="Tetsuo Koyama"/><br /><sub><b>Tetsuo Koyama</b></sub></a><br /><a href="#maintenance-tkoyama010" title="Maintenance">🚧</a> <a href="https://github.com/bjlittle/geovista/commits?author=tkoyama010" title="Code">💻</a> <a href="#data-tkoyama010" title="Data">🔣</a> <a href="#example-tkoyama010" title="Examples">💡</a> <a href="#ideas-tkoyama010" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/bjlittle/geovista/commits?author=tkoyama010" title="Documentation">📖</a> <a href="#infra-tkoyama010" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a> <a href="#tutorial-tkoyama010" title="Tutorials">✅</a> <a href="https://github.com/bjlittle/geovista/issues?q=author%3Atkoyama010" title="Bug reports">🐛</a> <a href="#question-tkoyama010" title="Answering Questions">💬</a> <a href="#eventOrganizing-tkoyama010" title="Event Organizing">📋</a> <a href="#translation-tkoyama010" title="Translation">🌍</a> <a href="https://github.com/bjlittle/geovista/pulls?q=is%3Apr+reviewed-by%3Atkoyama010" title="Reviewed Pull Requests">👀</a> <a href="#promotion-tkoyama010" title="Promotion">📣</a> <a href="#mentoring-tkoyama010" title="Mentoring">🧑‍🏫</a></td>
+      <td align="center" valign="top" width="20%"><a href="https://github.com/tkoyama010"><img src="https://avatars.githubusercontent.com/u/7513610?v=4?s=75" width="75px;" alt="Tetsuo Koyama"/><br /><sub><b>Tetsuo Koyama</b></sub></a><br /><a href="#maintenance-tkoyama010" title="Maintenance">🚧</a> <a href="https://github.com/bjlittle/geovista/commits?author=tkoyama010" title="Code">💻</a> <a href="#data-tkoyama010" title="Data">🔣</a> <a href="#example-tkoyama010" title="Examples">💡</a> <a href="#ideas-tkoyama010" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/bjlittle/geovista/commits?author=tkoyama010" title="Documentation">📖</a> <a href="#infra-tkoyama010" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a> <a href="#tutorial-tkoyama010" title="Tutorials">✅</a> <a href="https://github.com/bjlittle/geovista/issues?q=author%3Atkoyama010" title="Bug reports">🐛</a> <a href="#question-tkoyama010" title="Answering Questions">💬</a> <a href="#eventOrganizing-tkoyama010" title="Event Organizing">📋</a> <a href="#translation-tkoyama010" title="Translation">🌍</a> <a href="https://github.com/bjlittle/geovista/pulls?q=is%3Apr+reviewed-by%3Atkoyama010" title="Reviewed Pull Requests">👀</a> <a href="#promotion-tkoyama010" title="Promotion">📣</a> <a href="#mentoring-tkoyama010" title="Mentoring">🧑‍🏫</a> <a href="#security-tkoyama010" title="Security">🛡️</a></td>
       <td align="center" valign="top" width="20%"><a href="https://github.com/yutik-nn"><img src="https://avatars.githubusercontent.com/u/64946569?v=4?s=75" width="75px;" alt="Yuta Norden"/><br /><sub><b>Yuta Norden</b></sub></a><br /><a href="#ideas-yutik-nn" title="Ideas, Planning, & Feedback">🤔</a></td>
     </tr>
     <tr>
diff --git a/changelog/1250.community.rst b/changelog/1250.community.rst
new file mode 100644
index 00000000..1f44d04f
--- /dev/null
+++ b/changelog/1250.community.rst
@@ -0,0 +1 @@
+Added :user:`tkoyama010` as a contributor for ``security``. (:user:`bjlittle`)