diff --git a/lib/opensearch/version.rb b/lib/opensearch/version.rb
index 071541299..4be5e0c55 100644
--- a/lib/opensearch/version.rb
+++ b/lib/opensearch/version.rb
@@ -25,5 +25,5 @@
 # under the License.
 
 module OpenSearch
-  VERSION = '4.0.0'.freeze
+  VERSION = '4.0.0-beta.1'.freeze
 end