diff --git a/pyproject.toml b/pyproject.toml
index 106d20c..fd9d259 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,6 +37,7 @@ dev = [
     "pytest",
     "pytest-cov", # Used to report total code coverage
     "ruff", # Used for static linting of files
+    "aiohttp", # for epyc unit test 
 ]
 
 [build-system]