diff --git a/pyproject.toml b/pyproject.toml
index e89977b..a9c8344 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ keywords = [
     "index",
 ]
 dependencies = [
-    "elastic-transport>=8,<9",
+    "elastic-transport>=8.4.1,<9",
 ]
 
 [project.optional-dependencies]