diff --git a/.github/workflows/sql-test-and-build-workflow.yml b/.github/workflows/sql-test-and-build-workflow.yml
index 3cf4af8ea7..df8a2f617d 100644
--- a/.github/workflows/sql-test-and-build-workflow.yml
+++ b/.github/workflows/sql-test-and-build-workflow.yml
@@ -3,7 +3,7 @@ name: SQL Java CI
 on: [push, pull_request]
 
 env:
-  OPENSEARCH_VERSION: '1.3.19-SNAPSHOT'
+  OPENSEARCH_VERSION: '1.3.20-SNAPSHOT'
 
 jobs:
   build:
diff --git a/build.gradle b/build.gradle
index c9259628e6..a60abd428f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@
 
 buildscript {
     ext {
-        opensearch_version = System.getProperty("opensearch.version", "1.3.19-SNAPSHOT")
+        opensearch_version = System.getProperty("opensearch.version", "1.3.20-SNAPSHOT")
         spring_version = "5.3.27"
     }
 
diff --git a/doctest/build.gradle b/doctest/build.gradle
index c8ad05c1bf..d0f620a23a 100644
--- a/doctest/build.gradle
+++ b/doctest/build.gradle
@@ -45,7 +45,7 @@ task stopOpenSearch(type: KillProcessTask)
 doctest.dependsOn startOpenSearch
 doctest.finalizedBy stopOpenSearch
 
-// disable doctest for 1.3.x in case no opensearch-ml-1.3.19 snapshot.
+// disable doctest for 1.3.x in case no opensearch-ml-1.3.20 snapshot.
 // https://github.com/opensearch-project/sql/issues/942
 // build.dependsOn doctest
 clean.dependsOn(cleanBootstrap)