diff --git a/build.gradle b/build.gradle
index 38cc4114..9f79707e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,7 +10,7 @@ import org.opensearch.gradle.testclusters.StandaloneRestIntegTestTask
 buildscript {
     ext {
         opensearch_group = "org.opensearch"
-        opensearch_version = System.getProperty("opensearch.version", "1.3.19-SNAPSHOT")
+        opensearch_version = System.getProperty("opensearch.version", "1.3.20-SNAPSHOT")
         // 1.0.0 -> 1.0.0.0, and 1.0.0-SNAPSHOT -> 1.0.0.0-SNAPSHOT
         opensearch_build = opensearch_version.replaceAll(/(\.\d+)([^\d]*)$/, '$1.0$2')
         common_utils_version = System.getProperty("common_utils.version", opensearch_build)