diff --git a/build.gradle b/build.gradle
index b4e2e9f4b..08d1113f3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -18,7 +18,7 @@ buildscript {
     ext {
         opensearch_group = "org.opensearch"
         isSnapshot = "true" == System.getProperty("build.snapshot", "true")
-        opensearch_version = System.getProperty("opensearch.version", "2.17.0-SNAPSHOT")
+        opensearch_version = System.getProperty("opensearch.version", "2.18.0-SNAPSHOT")
         buildVersionQualifier = System.getProperty("build.version_qualifier", "")
         // 3.0.0-SNAPSHOT -> 3.0.0.0-SNAPSHOT
         version_tokens = opensearch_version.tokenize('-')