diff --git a/modules/opensearch/testcontainers/opensearch/__init__.py b/modules/opensearch/testcontainers/opensearch/__init__.py
index 8a02dbb02..b062f61e7 100644
--- a/modules/opensearch/testcontainers/opensearch/__init__.py
+++ b/modules/opensearch/testcontainers/opensearch/__init__.py
@@ -57,7 +57,7 @@ def __init__(
 
         self.with_exposed_ports(self.port)
         self.with_env("discovery.type", "single-node")
-        self.with_env("plugins.security.disabled", "false" if security_enabled else "true")
+        self.with_env("DISABLE_SECURITY_PLUGIN", "false" if security_enabled else "true")
         if self._supports_initial_admin_password(str(image)):
             self.with_env("OPENSEARCH_INITIAL_ADMIN_PASSWORD", self.initial_admin_password)
         if security_enabled: