diff --git a/build.gradle b/build.gradle
index fc8ac7121..79f9ad13c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,7 +17,7 @@ buildscript {
     ext {
         opensearch_group = "org.opensearch"
         isSnapshot = "true" == System.getProperty("build.snapshot", "true")
-        opensearch_version = System.getProperty("opensearch.version", "2.8.0-SNAPSHOT")
+        opensearch_version = System.getProperty("opensearch.version", "2.9.0-SNAPSHOT")
         buildVersionQualifier = System.getProperty("build.version_qualifier", "")
         // 2.3.0-SNAPSHOT -> 2.3.0.0-SNAPSHOT
         version_tokens = opensearch_version.tokenize('-')