diff --git a/build.gradle b/build.gradle
index b2687cee..b2298512 100644
--- a/build.gradle
+++ b/build.gradle
@@ -62,7 +62,7 @@ apply plugin: 'opensearch.pluginzip'
 
 
 checkstyle {
-    toolVersion = '8.24'
+    toolVersion = '8.29'
     configFile file("checkstyle/checkstyle.xml")
 }
 
diff --git a/release-notes/opensearch-asynchronous-search.release-notes-2.6.0.0.md b/release-notes/opensearch-asynchronous-search.release-notes-2.6.0.0.md
new file mode 100644
index 00000000..a37e7642
--- /dev/null
+++ b/release-notes/opensearch-asynchronous-search.release-notes-2.6.0.0.md
@@ -0,0 +1,6 @@
+## Version 2.6.0.0 2023-02-21
+
+Compatible with OpenSearch 2.6.0
+
+### Maintenance
+* Fix checkstyle version ([#237](https://github.com/opensearch-project/asynchronous-search/pull/237))
\ No newline at end of file