diff --git a/pyproject.toml b/pyproject.toml
index aa82023..43fef11 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,6 +19,7 @@
 better-exceptions = "^0.3.3"
 mergedeep = "^1.3.4"
 taskflow = "^5.0.0"
+eventlet = "^0.33.1"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^7.1.3"