diff --git a/pyproject.toml b/pyproject.toml
index 7d0df0e..6bfda80 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,6 +26,7 @@ classifiers = [
 dependencies = [
     "bleach",
     "opensearch-dsl~=2.0.1",
+    "opensearch-py>=2.0.0,<3.0.0",
     "snowballstemmer",
 ]