diff --git a/.ci/opensearch/Dockerfile b/.ci/opensearch/Dockerfile
index 3012ba0a..d60b1473 100755
--- a/.ci/opensearch/Dockerfile
+++ b/.ci/opensearch/Dockerfile
@@ -1,5 +1,5 @@
-ARG OPENSEARCH_VERSION
-FROM opensearchproject/opensearch:latest
+ARG OPENSEARCH_VERSION=1.0.0
+FROM opensearchproject/opensearch:$OPENSEARCH_VERSION
 
 ARG opensearch_path=/usr/share/opensearch
 ARG opensearch_yml=$opensearch_path/config/opensearch.yml