diff --git a/build.gradle b/build.gradle
index 34e0332e..0f34d9e6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -48,7 +48,7 @@ validateNebulaPom.enabled = false
 
 buildscript {
     ext {
-        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", "")
         isSnapshot = "true" == System.getProperty("build.snapshot", "true")
         // 2.2.0-SNAPSHOT -> 2.2.0.0-SNAPSHOT